Toyota Prius: Difference between revisions
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Former CIA chief [[R. James Woolsey, Jr.]] drives a Prius because of its low fuel consumption. Woolsey claims that money that pays for imports of gasoline help fund terrorism and states hostile to the United States. Ben Oliver writes the following: "By rights, Woolsey ought to drive a big, bad Hummer. Instead, he drives a Prius, and he says that if you live in a country dependent on imported oil, it's your patriotic duty to do the same. His argument is simple: It's a bad thing for transport to depend on oil when the great majority of that oil lies in volatile parts of the world whose governments are hostile to the West. Moreover, he argues that, by making the [[Middle East]] so wealthy, we're indirectly subsidizing terror. For Woolsey, the cash register at your local gas station is a collection box for [[al-Qaeda]]. 'We're paying for both sides in this war, and that's not a good long-term strategy,' he says. 'I have a bumper sticker on the back of my Prius that reads, "Bin Laden hates this car."'"<ref>[http://www.motortrend.com/features/consumer/112_0705_james_woolsey_interview/ James Woolsey - Interview - Motor Trend<!-- Bot generated title -->]</ref> |
Former CIA chief [[R. James Woolsey, Jr.]] drives a Prius because of its low fuel consumption. Woolsey claims that money that pays for imports of gasoline help fund terrorism and states hostile to the United States. Ben Oliver writes the following: "By rights, Woolsey ought to drive a big, bad Hummer. Instead, he drives a Prius, and he says that if you live in a country dependent on imported oil, it's your patriotic duty to do the same. His argument is simple: It's a bad thing for transport to depend on oil when the great majority of that oil lies in volatile parts of the world whose governments are hostile to the West. Moreover, he argues that, by making the [[Middle East]] so wealthy, we're indirectly subsidizing terror. For Woolsey, the cash register at your local gas station is a collection box for [[al-Qaeda]]. 'We're paying for both sides in this war, and that's not a good long-term strategy,' he says. 'I have a bumper sticker on the back of my Prius that reads, "Bin Laden hates this car."'"<ref>[http://www.motortrend.com/features/consumer/112_0705_james_woolsey_interview/ James Woolsey - Interview - Motor Trend<!-- Bot generated title -->]</ref> |
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====Fashion over function==== |
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The Prius's shape gives it a low 0.26 [[Automobile drag coefficients|coefficient of drag]].<ref>Edmunds.com. [http://www.edmunds.com/advice/fueleconomy/articles/106954/article.html "Improving Aerodynamics to Boost Fuel Economy"] 2 May 2006. 31 May 2008</ref> |
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In spite of the efficiency of the Prius's shape, in 2004, industry analyst Art Spinella of [[CNW Marketing Research]] (CNWMR), whose skepticism towards hybrids is well known (see [[Toyota_Prius#Lifetime_energy_cost|Lifetime energy cost]]), said "the Prius was a fashion statement", attributing its success over the [[Honda Civic Hybrid]], which has a nearly identical appearance to its non-hybrid versions, to its distinctive styling, which lets "other people know the driver is driving a hybrid vehicle". However, this does not explain the lack of success for the even more distinctive [[Honda Insight]].<ref>[http://www.cars.com/go/compare/trimCompare.jsp?acodes=USB80TOC161C0,USB80HOC071A0 2008 Toyota Prius vs. 2008 Honda Civic Hybrid<!-- Bot generated title -->]</ref>. (Excluding the fact that demand for two-seaters is far less than that for four-seaters.) |
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In July 2007 the ''[[The New York Times]]''<ref>Maynard, Micheline; Nick Bunkley and Mary M. Chapman contributing. [http://www.nytimes.com/2007/07/04/business/04hybrid.html?ex=1341288000&en=4beada66541df849&ei=5124 "Say 'Hybrid' and Many People will Hear 'Prius.'"] ''The New York Times'', via nytimes.com, [[2007]]-[[07-04]]. Retrieved on [[2007]]-[[08-13]].</ref> published an article using data from [[CNW Marketing Research]] finding that 57% of Prius buyers said their main reason for buying was that "it makes a statement about me.", while just 36% cited fuel economy as a prime motivator. Shortly afterwards ''Washington Post'' columnist Robert Samuelson coined the term "Prius politics" to describe a situation where the driver's desire to "show off" is a stronger motivator than the desire to curb [[greenhouse gas]] emissions.<ref>Samuelson, Robert J. [http://www.washingtonpost.com/wp-dyn/content/article/2007/07/24/AR2007072401855.html "Prius Politics."] ''The Washington Post'', page A15, via washingtonpost.com, [[2007]]-[[07-25]]. Retrieved on [[2007]]-[[08-13]].</ref> |
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===Safety=== |
===Safety=== |
Revision as of 13:21, 18 June 2008
Toyota Prius | |
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![]() | |
Overview | |
Manufacturer | Toyota |
Production | 1997–present |
Body and chassis | |
Class | Hybrid car |
Layout | FF layout |
The Toyota Prius [ˈpri.əs] is a hybrid electric midsize car. According to the United States Environmental Protection Agency, the 2008 Prius is the most fuel efficient car sold in the U.S.[1]
The Prius first went on sale in Japan in 1997, making it the first mass-produced hybrid vehicle. It was subsequently introduced worldwide in 2001. In May 2008, worldwide cumulative sales of the Toyota Prius passed 1 million. The Prius is sold in more than 40 countries and regions, with its largest markets being those of Japan and North America.[2]
History
In 1994, Toyota executive Takeshi Uchiyamada was given the task of creating a new car which would be both fuel efficient and environmentally friendly.[3][dead link] After reviewing over 100 hybrid designs, the engineering team settled on a hybrid engine design based on a 1974 TRW patent, but many technical and engineering problems had to be solved within the three years that the team was given to bring the car to the Japanese market, a goal they barely achieved as the first Prius went on sale in December 1997. A main problem was the longevity of the battery, which needed to last between 7 and 10 years. The solution the engineers came up with was to keep the battery pack between 60% and 40% charged, proving to be the "sweet spot" for extending the battery life to roughly that of the other car components.[4]
Sales in Europe began at the start of 2001, by which time the car was more than three years old.
The car was a modest success in Japan and after gathering several years of test data from the Japanese early adopters, the company felt it was safe to put it on sale in the U.S. market. Sales were small at first (though the waiting list was six months for the first few years in the U.S.) but picked up substantially with a complete redesign in 2004, the year when the development cost was paid off[citation needed]. The Prius is considered to be a successful car for Toyota from both technical and marketing perspectives.
The word prius is a Latin word meaning "[to go] before."[5]. A Toyota spokesman stated that "Toyota chose this name because the Prius vehicle is the predecessor of cars to come." [6]
Design
Technology
The Prius is a combined hybrid (sometimes referred to as series-parallel), a vehicle that can be propelled by gasoline (petrol) and/or electric power. Components of the system include:
- Regenerative braking, using motor-generators, which converts kinetic energy of motion into electrical energy that is stored in the traction battery and reduces wear on the brake pads;
- A 1NZ-FXE internal combustion engine (ICE) using the more efficient Atkinson cycle instead of the more common Otto cycle. The gasoline engine normally shuts off during traffic stops and the accessories (including the air conditioning) are powered by the battery pack. The engine is used both to propel the vehicle and to recharge the batteries. Because of the availability of extra power from the electric motors for rapid acceleration the engine is sized smaller than usual for increased fuel efficiency and lowered emissions with acceptable acceleration;
- Two electric motor/generators: MG1 and MG2. MG1, reversible and up to 10,000 rpm, starts the engine and provides counter torque for the Continuously Variable Transmission (CVT). MG2 provides 50 kW (67 hp) between 1,200 to 1,540 rpm and 400 N·m (295 ft·lbf) torque between 0 to 1,200 rpm, contributing to performance and economy. These motor-generators are used as generators when used for regenerative braking, and as motors are capable of starting the vehicle (and gas engine if needed) and low speed (<~30 mph, 41 mph in NHW20) travel;
- A Hybrid Synergy Drive (HSD) unit that combines a planetary gearset that behaves like a Continuously Variable Transmission (CVT) called the Power Split Device[7] to increase efficiency. The computer controlled HSD transaxle adjusts and blends the amount of power from the gasoline engine and electric motor-generator(s) as needed by the front drive wheels and rechargeable batteries;
- A sealed 38-module nickel metal hydride (NiMH) battery pack providing 273.6 volts, 6.5 A·h capacity and weighing 53.3 kg (118 lb)[8] is supplied by Japan's Panasonic. They are normally charged to 40–60% of maximum capacity to prolong battery life as well as provide a reserve for regenerative braking;
- Wind resistance is reduced by a drag coefficient of 0.26 (0.29 for 2000 model) with a Kammback design to reduce air resistance. Lower rolling-resistance tires are used to reduce road friction;
- A vacuum flask for storing hot coolant when the vehicle is powered off for reuse so as to reduce warm-up time (US market);
- An EV mode (or stealth mode) that allows drivers to operate on electric power only under low-power conditions for a limited duration of time (Europe and Asian markets, aftermarket in the US). Advocates for the blind warn that the Prius is silent, and that it could be hazardous to blind pedestrians and others accustomed to engine noise to warn of a nearby vehicle;
- Vehicle weight is reduced by the use of a flexible resin gasoline tank and by the use of aluminum instead of steel for the engine bay hood and hatchback.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/7/73/ToyotaOpenHSD.jpg/220px-ToyotaOpenHSD.jpg)
The computer program used in the Prius shuts off the engine when the car is stopped, is reversing, or is descending hills, thereby dramatically decreasing fuel consumption in city driving . The HSD's on-board computer program determines when and how to use the engine, motor, or both to power the car and recharge the battery so as to maximize efficiency. Typically, a gasoline engine runs inefficiently at half-throttle, creating a choking condition called pumping loss, a major reason for the inefficiency of gasoline engines compared to diesels. The Prius minimizes pumping loss by using a high torque range as much as possible with the throttle fully open. Drive-by-wire throttle control technology and Toyota's Hybrid Synergy Drive (a torque combiner, electric drive, and computer control) are essential to this engine control. In addition to the immediate benefit of reducing fuel consumption and emissions, stopping the gasoline engine also improves the performance of the catalytic converter, as the exhaust gases from an idling engine tend to cool the catalyst below its optimal temperature.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/4/4d/Prius_mfd_energy.jpg/220px-Prius_mfd_energy.jpg)
Typical gasoline- or diesel-engined vehicles consume fuel when the vehicle is stopped, as is common in city driving. The Prius typically shuts down the gasoline engine and runs solely off the battery pack at low speeds and when stopped. A non-hybrid car also gets worse fuel consumption in city driving because its engine is continually used to accelerate the car to driving speed and then this energy is lost to friction brakes during stop-and-go driving. The Prius recaptures some of this energy by using regenerative braking to charge its battery pack while slowing down with its motor-generators in generator mode. For acceptable acceleration the IC engine on a "standard" car typically is much larger than needed for constant-speed travel. By using both a gasoline engine and electric motors for acceleration the Prius engine can be a smaller, more efficient size and still provide acceptable acceleration. This means the greatest advantages of a hybrid are mainly in city driving, though factors including driving style, air conditioning use, and short trips may offset some of this advantage. The frequent starting and stopping of the Prius engine does not cause noticeable additional wear and tear or emission problems because the electric drive motors have enough power to quickly spin the engine to optimal speed (around 1,000 rpm) before fuel is admitted.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/8/84/2003_Prius_energy_screen.jpg/220px-2003_Prius_energy_screen.jpg)
For any car, aerodynamic losses, which vary roughly as the velocity squared due to air drag are much greater on the highway than in low speed city driving. The Prius hybrid has less of an advantage in higher speed open road driving, typical of intercity driving. Nevertheless, the Prius still obtains improved fuel consumption under these circumstances since it can use a smaller and more efficient engine than would otherwise be required. The electric motor(s), powered by the battery pack, can provide the extra peak power needed for acceleration, passing and limited hill climbing. The lower weight, cross sectional area and lowest drag coefficient of a production car in the U.S. market (since the cancellation of the Honda Insight) make the Prius a very efficient [9][1] highway traveler, getting Template:Mpg on the highway according to the U.S. EPA. The environmental impact of the car's batteries has been questioned.[10] To encourage battery recycling, dealers are paid a $200 fee for return of the car's batteries.[11] Toyota has laboratory reports that some Prius battery packs have lasted the equivalent of 180,000 miles (290,000 km) [8] As the cars start to age, early reports have shown that in at least some cases the batteries can last in excess of 250,000 miles (400,000 km)[12] Individual battery longevity will vary depending upon the treatment and use history of the battery pack. A degraded battery pack will reduce performance and fuel economy, but not leave the car inoperable.
Models
Feature | Model code | |||
---|---|---|---|---|
NHW10 | NHW11 | NHW20 | ||
Body style | 4-door Sedan |
4-door Sedan |
5-door Hatchback | |
First sales | 1997 | 2000 | 2003 | |
Battery | Modules | 40 | 38 | 28 |
Cells per module | 6 | 6 | 6 | |
Total cells | 240 | 228 | 168 | |
Volts per cell | 1.2 | 1.2 | 1.2 | |
Total volts (nominal) | 288 | 273.6 | 201.6 | |
Capacity amp hours | 6.0 | 6.5 | 6.5 | |
Capacity Watt hours | 1728 | 1778.4 | 1310.4 | |
Weight kg | 57 | 50 | 45 | |
Gasoline Engine | Power kW/HP | 43/58 | 52/70 | 57/76 |
Max rpm | 4000 | 4500 | 5000 | |
Electric Motor | Operating Voltage | 288 | 273 | 500 |
Power kW/HP | 30/40 | 33/44 | 50/67 | |
Combined | Power kW/HP | ?/? | 73/98 | 82/110 |
1997–2000 Prius (model NHW10)
NHW10 | |
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![]() | |
Overview | |
Production | 1997–2001 |
Assembly | Takaoka, later Motomachi, Japan[13] |
Body and chassis | |
Class | Compact car |
Body style | 4-door sedan |
Powertrain | |
Engine | Toyota Hybrid System Gasoline: 1.5 L DOHC I4 13.5:1 compression 43 kW (58 hp) @ 4000 rpm 102 N·m (75 ft·lbf) @ 4000 rpm Electric: 288 V motor 30 kW (40 hp) @ 940 rpm 305 N·m (225 ft·lbf) @ 0 rpm |
Dimensions | |
Wheelbase | 2550 mm (100.4 in) |
Length | 4275 mm (168.3 in) |
Width | 1694 mm (66.7 in) |
Height | 1491 mm (58.7 in) |
The first Prius, model NHW10, went on sale in December 1997.[14] It was sold only in Japan, though they have been imported privately to the United Kingdom, Australia, and New Zealand.[15]
2001–2003 Prius (model NHW11)
NHW11 | |
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![]() | |
Overview | |
Production | 2000–2003 |
Assembly | Toyota City (Motomachi), Japan[16] |
Body and chassis | |
Class | Compact car |
Body style | 4-door sedan |
Powertrain | |
Engine | Toyota Hybrid System Gasoline: 1.5 L DOHC I4 VVT-i 13.0:1 compression 52 kW (70 hp) @ 4500 rpm 110 N·m (82 ft·lbf) @ 4200 rpm Electric: 273.6 V motor 33 kW (44 hp) @ 1040 rpm 350 N·m (258 ft·lbf) @ 0 rpm SULEV |
Transmission | 1-speed planetary gear |
Dimensions | |
Wheelbase | 2550 mm (100.4 in) |
Length | 4308 mm (169.6 in) |
Width | 1694 mm (66.7 in) |
Height | 1463 mm (57.6 in) |
Curb weight | 1254.2 kg (2765 lb) |
The 2001–2003 Prius for the United States market was powered by a 1.5-liter 4 cylinder[16] gasoline engine, a permanent magnet AC electric motor, and a 274-volt nickel-metal hydride (Ni-MH) battery pack. The gasoline engine developed 70 hp (52 kW) and 82 ft⋅lbf (111 N⋅m) of torque. The electric motor generated a maximum of 44 hp (33 kW) and 258 ft⋅lbf (350 N⋅m) of torque. Japanese versions were less powerful.[17]
The engine and motor power were increased over the previous model. Air conditioning and a continuously variable transmission were standard equipment.[18]
In the United States, the NHW11 was the first Prius to be sold. The Prius was marketed between the smaller Echo and the larger Corolla. The published retail price of the car was US$19,995.[19] The California Air Resources Board (CARB) classified the car as a Super Ultra Low Emission Vehicle (SULEV).[20] European sales began in September 2000.[21] The official launch of the Prius in Australia occurred in 2001 after the Sydney Motor Show.[22]
2004–present Prius (model NHW20)
NHW20 | |
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![]() | |
Overview | |
Production | 2004–2008 |
Assembly | Tsutsumi, Japan Fujimatsu, Japan[13] |
Body and chassis | |
Class | Midsize car |
Body style | 5-door hatchback |
Powertrain | |
Engine | Toyota Hybrid System II Gasoline: 1.5 L DOHC I4 VVT-i 57 kW (76 hp) @ 5000 rpm 115 N·m (85 ft·lbf) @ 4200 rpm Electric: 500 V 50 kW (67 hp) @ 1200 rpm 400 N·m (295 ft·lbf) @ 0 rpm AT-PZEV Net power: 110 hp (82 kW) |
Transmission | 1-speed planetary gear |
Dimensions | |
Wheelbase | 2700 mm (106.3 in) |
Length | 4450 mm (175.33 in) |
Width | 1725 mm (67.97 in) |
Height | 1490 mm (58.71 in) |
Curb weight | 1325 kg (2921 lb) |
The Prius is completely redesigned into a mid-size liftback which is between the Corolla and the Camry in size. The new model is 6 inches (150 mm) longer than the previous version.[23] Its more aerodynamic body resulted in a drag coefficient of 0.26.[24]
The new Hybrid Synergy Drive (HSD) uses an all-electric compressor for cooling. Combined with a smaller and lighter NiMH battery, the NHW20 is more powerful and more efficient than the NHW11.[25] Air conditioning is now operated independently of the gasoline engine, an industry first.[26] In the U.S., the battery pack of the 2004 Prius is warranted for 100,000 miles (160,000 km) or 8 years, although Toyota has stated that they expect it to last 15 years. The warranty is instead 150,000 miles (240,000 km) or 10 years[27] for Prius in California, and in the seven Northeastern states that have adopted the stricter California emission control standards.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/e/e5/PriusTaxi.jpg/220px-PriusTaxi.jpg)
Prius Taxis are common in Victoria and Vancouver, British Columbia. BC government has now proposed a regulation that requires all new taxis to be hybrids.
It is classified as a SULEV (Super Ultra Low Emissions Vehicle and is certified by California Air Resources Board as an "Advanced Technology Partial Zero Emission Vehicle" (AT-PZEV).[28]
NHTSA (United States) crash testing of the 2004 Prius yielded a five star driver and four star passenger rating in the frontal collision test (out of five stars). Side crash results were four out of five stars for both front and rear seats. The car scored four out of five stars in rollover testing. There was a massive 2 month waiting list for this car in the United Kingdom as they were only being produced outside Europe.[29]
In 2004, EuroNCAP tested the Prius. It earned the following ratings: Adult Occupant: Template:Rating-5 Child Occupant: Template:Rating-5 Pedestrian: Template:Rating-4.[30]
Among the Prius' options are Toyota's implementation of an advanced key called Smart Key System or SKS (the feature can be user-deactivated), a backup camera displayed on the multi-function display (MFD), DVD navigation on the MFD, vehicle stability control and Bluetooth for hands-free calling. Automated parallel and reverse parking is available in Japan and Europe. [31]
Production of the Prius for the China market began in December 2005 by Sichuan FAW Toyota Motor, a joint venture with First Automobile Works. The Prius has been used for police duties and in other emergency fleets.
The 2006 model introduced some minor cosmetic changes, such as a higher-resolution liquid crystal display, as well as new optional features such as a rear-view camera, advanced airbags and an upgraded audio system with an auxiliary input. The 2007 Prius adds advanced and side-curtain airbags standard on all models. A Touring Edition was introduced that includes an elongated larger rear spoiler as well as larger, sharper-pointed 7-spoke 16" alloy wheels with plastic hub cap cover to protect it from scratches when parking against the curb. The Touring Edition also comes with a firmer European style tuned suspension, standard high-intensity-discharge (HID) headlights and integrated (non-HID) fog lights.
Future and Plug-in version
The Toyota Motor Corporation plans on developing three different versions, starting in 2009.[32] The 2009 Prius will have only minor changes and be ready for first delivery in October of 2008.[33] The 2010 Prius details are rumored to be announced in January 2009 and available for delivery in May 2009[34][35] [36].
Toyota CEO Katsuaki Watanabe said in a February 16, 2007 interview that Toyota was "aiming at reducing, by half, both size and cost of the third-generation hybrid system."[37]
A Toyota spokesman said that future Prius research "...is broad-reaching and being carried out from various angles."[38]
Toyota is road testing prototype plug-in hybrid vehicles (called Toyota Plug-in HV).[39][40]
Ten hydrogen powered Prius cars were delivered in November 2007 to Vistorka, a consortium of companies in Iceland.[41]
Government and corporate incentives
Government incentives
A number of governments have incentives that are intended to encourage hybrid car sales. In Belgium, the national government offers reductions in the purchase price of up to 15% for buying cars that have lower CO2 exhaust.[42]
The federal government in Canada offers to those who buy or lease hybrid cars a rebate.[43] Some provincial governments also offer incentives such as in British Columbia,[44] Manitoba,[45] Quebec,[46] Ontario,[47] and Prince Edward Island.[48]
In the United Kingdom, incentives are mostly parking-related. Parking incentives exists in Richmond upon Thames (south west London)[49], Westminster (Central London) for resident parking permits[50], Winchester (now discontinued)[51][52][53], Manchester, and Brighton has similar plans.[54] Drivers in London can register for an exemption from the £8 daily congestion charge [55][54][56] Some of the incentives in the United Kingdom have been criticized in the press given that non-hybrid cars, some of which have better fuel economy, are not afforded the same incentives.[57][58]
In the United States, the federal government offers a tax credit to purchasers until a certain number of cars has been sold by a manufacturer. This has ranged from US$787 to $3,150, which expired in 2007 for hybrids sold by Toyota.[59] Some state governments, including Colorado[60], Connecticut[61], Illinois[62] offer tax incentives. Hybrid engine automobiles are exempt from high-occupancy vehicle lane restrictions in some U.S. states.[63]) California (currently until January 1, 2011.[64][65] Los Angeles and San Jose, California had exempted hybrid cars from paying for street parking.[66][67] New York State offers a special "green" version of their E-Z-Pass toll payment tag for Prius owners who use the NYS Thruway system, which gives the owners a 10% discount on tolls.
In the Netherlands, the government has lowered the tax for cars with CO2 emissions below a certain level (such as the Prius) to 14%. The tax on all other class cars has been raised from 22 to 25%. As a result, in the month January alone, more than 1800 cars have been sold. The importer has already indicated that he can no longer meet the demand for the year 2008.
In Sweden, private purchasers of the Prius (or any other vehicle in the environmentally less destructive class) are awarded SEK 10,000 (roughly USD 1700, €1100) after six months of ownership, in order to stimulate sales and use of such vehicles. The subsidy program has been very successful.
Corporate Incentives
Several U.S. companies offer employees incentives. Bank of America will reimburse $3000 on the purchase of new hybrid vehicles to full- and part-time associates working more than 20 hours per week.[68] Google,[69] software company Hyperion Solutions,[70] and organic food and drink producer Clif Bar & Co[68] offer employees a $5000 credit toward their purchase of certain hybrid vehicles including the Prius. Integrated Archive Systems, a Palo Alto IT company, offers a $10,000 subsidy toward the purchase of hybrid vehicles to full-time employees employed more than one year.[68] Clothing companies Timberland and Patagonia, law firm DLA Piper, non-profit American Jewish Committee, software publisher Topics Entertainment, and research firm ABR, Inc. are among companies offering eligible employees significant discounts on certain hybrid vehicles including the Prius.[68]
Travelers Companies, a large insurance company, offers hybrid owners a 10% discount on auto insurance in most states.[71] The Farmers Insurance Group offers a similar discount of up to 10% in most states.[68]
Controversies
Fuel consumption
![](http://upload.wikimedia.org/wikipedia/en/thumb/9/91/Priuslcd.jpg/220px-Priuslcd.jpg)
The Prius is marketed as a fuel efficient car.
In the United States, the Environmental Protection Agency (EPA) test results must be posted on new vehicle windows, and are the only fuel consumption figures that can be advertised. EPA testing procedures for all vehicles were revised in 2007 in an attempt to better match what the average driver would achieve.[72] The following data is taken from these figures: 2008 Prius Template:Mpg for city driving, Template:Mpg for highway driving, Template:Mpg combined; 2001 Prius Template:Mpg city, Template:Mpg highway.[73] The Prius is the most efficient car available in the U.S. in 2008, based on the official rating.[1]
The Prius is the most fuel efficient car that Consumer Reports has tested[74], giving a real-world fuel consumption of Template:Mpg for the Prius[75].
In the United Kingdom, the official fuel consumption data, provided by the Department for Transport, rates the Prius as: Template:Mpg (Imperial) urban, Template:Mpg (Imperial) extra urban and Template:Mpg (Imperial) combined.[76]
Comparisons with other vehicles
Several publications have tested the fuel economy of the Prius, some have compared it directly with other cars.
Two writers from the UK's Sunday Times did a comparison of the Prius with another car in long distance town and country driving.[77] The results showed that the other car, a BMW 520d SE with a Template:Auto bhp diesel engine and regenerative braking, averaged Template:Mpg (Imperial) whilst the Prius averaged Template:Mpg (Imperial) over exactly the same route. The comparison was performed on a journey of 545 miles (877 km) from London to Geneva, including 100 miles (160 km) of urban driving, about 200 miles (320 km) of driving on rural roads, and about 200 miles (320 km) of motorway driving at speeds of up to 78 miles per hour (126 km/h) on one French autoroute. It should be noted that the diesel fuel used by the BMW 520d SE has a significantly higher energy density than the gasoline used by the Prius.
Auto Express magazine performed independent fuel efficiency tests, on public roads, on a number of hatchbacks, and in August 2007 published their list of the ten most efficient. The Prius achieved 10th place in the list, returning Template:Mpg (Imperial). A Citroën C4 Coupé 1.6 HDi got 1st place with Template:Mpg (Imperial).[78]
Consumer tests have shown petrol-electric hybrid cars in general are little more efficient than top of the range diesels. [79]
Green credentials
Lifetime energy cost
A controversial 2006 study by CNW Marketing Research, Inc. calculated the overall energy cost of a Prius at US$3.25 per mile ($2.02/km) and a Chevrolet Tahoe SUV at US$2.94 per mile ($1.83/km). It concluded that 2005 hybrids cost "significantly more in overall energy costs than conventional Internal Combustion Engine [sic] (ICE) vehicles."[80] David Friedman of the Union of Concerned Scientists commented that the study "has been completely contradicted by studies from MIT, Argonne National Laboratory, and Carnegie Mellon's Lifecycle Assessment Group."[81] An article on the Better World Club website[82] investigates the source of the statement "a Hummer is more energy efficient over its lifetime than a Prius", which it characterizes as an urban legend. It suggests that the source may be the CNW "Dust to dust" study,[80] or follow-up articles by James L. Martin or Chris Demorro, and goes on to challenge some of the assumptions made in the study. A critique of the 2007 version of the CNW report by the Pacific Institute concluded that "closer inspection suggests that the report's conclusions rely on faulty methods of analysis, untenable assumptions, selective use and presentation of data, and a complete lack of peer review. Even the most cursory look reveals serious biases and flaws."[83]
In any case, even CNW Marketing has recognized the market has changed. Their 2007 update[84] for 2006 model year vehicles (see spreadsheet)[85] now lists the Prius as 25% less expensive per mile than the GMC Yukon, 28% less expensive than the Hummer H1 and 30% less expensive than the Toyota Sequoia. The update however does not include any of the details present in the 2005 report, so it is not certain if their previous assumptions of 109,000 miles (175,000 km) for a Prius lifetime versus 380,000 miles (610,000 km) or more for the lifetime of a large SUV are still being used, or if came from improved economies of scale.
CO2 claims
According to the UK Department for Transport, the Prius is tied with the diesel MINI Cooper D as the third least CO2-emitting vehicles behind the tied Volkswagen Polo 1.4 TDI and SEAT Ibiza 1.4 TDI.[86]
In the UK, the Advertising Standards Authority, an independent body charged with policing the rules of the advertising industry, ruled that a television advert for the Toyota Prius should not be broadcast again in the same form, having breached rules concerning misleading advertising. The advert claimed the Prius "emits up to one tonne less CO2 per year," while on-screen text included: "1 tonne of CO2 less than an equivalent family vehicle with a diesel engine. Average calculated on 20,000 km a year." Points of contention were the vehicles chosen for comparison, whether "up to one tonne less" adequately communicated that reductions could be lower, and whether the distance used was appropriate: 20,000 km per year is around a U.S. car's average annual driving distance, while a UK car's is 13,440 km.[87]
An earlier complaint to the New Zealand Advertising Standards Authority, decision 03/360 2003 was also upheld. It was ruled that Toyota were in breach of the New Zealand advertising standards code of ethics, by claiming "up to 89% fewer smog forming emissions”. The figure was based on comparison with Euro 3 standards, which most new cars also meet comfortably at the time.
A similar complaint was made in Australia and the UK in regards to an advertisement in “National Geographic” magazine, November 2002. However this case was dismissed. The adverts appeared only in the Australian edition but the Australian Advertising Standards Bureau does not deal with issues of truthfulness.
Image
Political symbolism
The large number of Prius-owning progressive celebrities in 2002 prompted the Washington Post to dub hybrids "Hollywood's latest politically correct status symbol."[88] While conservative "Prius Patriots" were also cited in 2005,[89] the vehicle carries an image as being a car for politically liberal environmentalists. A 2007 San Francisco Chronicle article said "Prius Progressives" were becoming an archetype, quoting conservative U.S. pundit Rush Limbaugh opining that "these liberals think they're ahead of the game on these things, and they're just suckers."[90]
Some conservatives promote use of the Toyota Prius. For example, Jim Road from What Would Jesus Drive? encouraged people to drive hybrid cars because of the damage that large SUVs can do to others.
Former CIA chief R. James Woolsey, Jr. drives a Prius because of its low fuel consumption. Woolsey claims that money that pays for imports of gasoline help fund terrorism and states hostile to the United States. Ben Oliver writes the following: "By rights, Woolsey ought to drive a big, bad Hummer. Instead, he drives a Prius, and he says that if you live in a country dependent on imported oil, it's your patriotic duty to do the same. His argument is simple: It's a bad thing for transport to depend on oil when the great majority of that oil lies in volatile parts of the world whose governments are hostile to the West. Moreover, he argues that, by making the Middle East so wealthy, we're indirectly subsidizing terror. For Woolsey, the cash register at your local gas station is a collection box for al-Qaeda. 'We're paying for both sides in this war, and that's not a good long-term strategy,' he says. 'I have a bumper sticker on the back of my Prius that reads, "Bin Laden hates this car."'"[91]
Safety
Quietness
The Wall Street Journal reported in February 2007 on concerns that quiet cars like the Prius may pose a safety risk to those who rely on engine noise to sense the presence or location of moving vehicles.[92] Blind pedestrians are a primary concern, and the National Federation of the Blind advocates audio emitters on hybrid vehicles,[93] but increased risks may also affect sighted pedestrians or bicyclists who are accustomed to aural cues from vehicles. In July 2007, a spokesperson for Toyota said the company is aware of the issue and is studying options[94].
Navigation system
The Prius' onboard GPS navigation system (as well as other models, such as the Lexus, which use the same technology) is designed so that destinations cannot be entered while the vehicle is in motion. According to the owner's manual, this is done for the driver's own safety (so that he is not distracted by trying to operate the navigation system while driving the car). However, this feature has caused considerable complaints from many owners who travel with a passenger and who want to have the passenger operate the navigation system while the driver is driving. Some owners claim that this actually increases the danger, as pulling off a highway onto the shoulder to enter a destination and then attempting to merge back into traffic going at highway speeds may be more dangerous than simply having the passenger enter data while the driver concentrates on driving.
On Toyota Prius with model years 2005 and earlier, it is possible to override this lock-out by pressing the onscreen volume button in the menu and then tapping the upper left, lower left, upper left, lower left corners of the screen in that order. Once that is done correctly a new menu will appear and all you have to do is hold down the override button until it beeps.[citation needed] However, in 2007, the override was removed for liability reasons[95].
Some consumers[95] are attempting to start a petition to have the override functionality restored, many of them claiming that they were falsely informed that the override functionality was still present and that they would not have purchased the vehicle if they knew of this limitation.
Durability
Traction control failure
A website that reports user complaints, ConsumerAffairs.com[dubious – discuss], in the United States issued a warning in January 2008 that; " The Prius traction control system can fail to operate properly on a snowy road", and that the "TRAC system is still inadequate on slippery inclines."[96] A representative for Toyota named Bill Kwon stated in 2007 that the traction control system in the Prius could affect performance in snow conditions[citation needed].
Aging
The ConsumerAffairs.com[dubious – discuss] website has also reported that "Prius hybrid technology is not aging well", having received complaints of numerous incidences of failed components related to the technology implemented in the Prius, as some of the vehicles were approaching 8 years old and 100,000 miles (160,000 km).[97]
Name
Prius is not a verb but a Latin comparative adjective or adverb, the neuter nominative singular form of the adjective whose corresponding masculine and feminine nominative singular forms are prior,[citation needed] (see also Latin declension - Irregular adverbs and their comparative and superlative forms) with meanings "ahead, in front, leading; previous, earlier, preceding, prior; former; basic;" [98]. Some enthusiasts enjoy using Prii as the plural, which would be correct if prius were a regular second declension Latin noun. The actual Latin plural of the adjective is priora (Reference [6] is slightly in error here). All of these forms are nominative case and there are several other forms for the other cases. As for the plural of Prius in English, Toyota has said that it is simply Prius and also that owners are welcome to use whatever they like. [99]
Sales
![](http://upload.wikimedia.org/wikipedia/commons/thumb/e/e8/2006_Toyota_Prius_Car_Share.jpg/200px-2006_Toyota_Prius_Car_Share.jpg)
Toyota announced on June 7, 2007 that it had sold 1 million hybrid vehicles globally, and that of those 757,600 were Prius.[100] Nearly 345,000 of the first 1 million hybrid cars made by Toyota were sold in Japan.[97] In May 2008, Toyota anounced that its worldwide cumulative sales of the Prius had passed the 1 million mark. The Prius, which is sold in more than 40 countries and regions, has its largest markets in Japan and North America. Nearly 60% of all Prius sales have been in North America, where 183,800 vehicles were sold in 2007.[2] That sales pace has accelerated in early 2008, with 66,100 vehicles sold in North America in the first four months, a rate that would result in nearly 200,000 sales if continued through the entire year.[citation needed] In fact, Toyota sold 21,757 Prius hybrids in the United States in April, setting a record for April sales and making the Prius the third most popular vehicle in the Toyota line, trailing the Corolla and the Camry.[citation needed]
U.S. sales of the Prius began in August 2000. By 2001 sales there totaled 15,556, and by 2002 had reached 20,119.[101] In 2004 sales there were 53,991, and doubled in 2005 to 107,897, about 60% of the world total of 180,000.[102] By 2006-06-07 266,212 Prius had been sold in the U.S., and accounted for 40% of the hybrid market there in 2006.[103] As of November 2007 Toyota has sold 510,325 Prius in the US since its initial launch in 2000. Prius gas-electric hybrid mid-size sedan reported sales of 14,212 units for a best-ever December and best-ever year-end sales of 181,221 units, up 68.9 percent over 2006.[104]
Aftermarket products
EV mode
When the vehicle is turned-on with the "start" button, it is ready to drive immediately with the electric motor, while electric pumps warm the engine with previously saved hot engine coolant, before the internal combustion engine is started. The delay between starting the car and starting the internal combustion engine is approximately seven seconds. The Asian and European versions of this vehicle provide a button labeled "EV" that maintains Electric Vehicle mode after start up, under most low-load driving conditions. The North American model does not have the "EV" button, although the "EV" mode is still supported internally by the Prius Hybrid Vehicle management computer. The PRIUS+ Project[105] offers conversion instructions for do-it-yourselfers who wish to enable the button. Toyota has now received government approval to run on public roads for tests. Researchers at the Advanced Power and Energy Program at the University of California, Irvine and the Institute of Transportation Studies at the University of California, Berkeley will begin testing two specially made Prius and analyze driver behavior, study air quality and energy use.[106] However, electric-only driving range remains limited to around seven miles (eleven kilometers) per charge in all-electric mode at up to 100 kilometers per hour (62 miles per hour).[107] No date has been set for public release of EV mode, and it will not be available to the public until a great deal of additional research has been done.
Plug-in
Plug-in hybrids use a larger battery pack that is recharged from external sources in order to further reduce fuel consumption. The batteries in a production PHEV will be built to handle deeper discharge cycles without loss of lifespan such as those in the Toyota RAV4 EV. Operation of the vehicle will be very similar to a normal hybrid, except that the electric operation will be more prevalent. In the case of a Prius PHEV, on the highway, the gasoline engine will operate as before, leaving the car with the same ability to accelerate and use freeways. Current converted Prius also operate in a high speed blended mode which can reduce but not eliminate fuel consumption on the freeway. When driving in slower conditions or with light loads, the batteries will be used first in a charge-depleting mode, allowing moderate commutes at low speeds (particularly under 41 mph/65 km/h) to be driven entirely on electricity. Once the batteries have been sufficiently discharged the car will automatically revert back to the charge-sustaining mode of the current stock Prius.
Evolving from the button project, The California Cars Initiative (CalCars)[108] converted a Prius in 2004, adding larger batteries and found out how to safely charge the batteries without affecting the hybrid system. Private companies EDrive Systems in the USA and Amberjac Projects in the UK announced plans to sell conversion kits in 2006 (pushed back to 2007).[citation needed] The most recent versions, such as from OEMTek.com[109] in California use a new, patented advanced safe-format Lithium Battery from Valence Technology called Saphion. Using the advanced batteries increases the final price by an estimated US$12,000. The energy density and far more efficient utilization of these batteries provide around 20x the available power of the standard NiMH battery pack but at only double the weight. Tests show it capable of achieving > 30 miles (50 km) in all electric mode at speeds below 34 mph (55 km/h). The internal combustion engine starts only at higher speeds or when extra acceleration is needed. Fuel economy is improved to Template:Mpg - Template:Mpg [110] depending on driving conditions. City driving may be possible without using the ICE at all, eliminating the use of almost all liquid fuel in exchange for electrical energy.
PriusPlus[105] is a similar project evolving from CalCars, using lead-acid batteries and a do-it-yourself kit. This conversion gives a car that has Template:Mpg under normal driving conditions. All-electric mode can be used for 10–12 miles in street driving. In January 2007 issue of IEEE Spectrum, CalCars lead technical engineer, Ron Gremban, notes that drivers installing the CalCars Prius+ kit shouldn’t expect a 'positive financial payback.'[111] The kit adds 135 kg (298 lb) to the car's weight, and increases efficiency. The lead-acid battery pack performance is reduced in cold weather, has a limited life of about 400 deep discharges, and must be recharged within a day to maintain this lifespan. The hope is, by the time the batteries need replacing, a better option will be on the market at a comparable price.
However, under certain conditions, an Argonne National Lab study[112] showed that the Prius' blended power drivetrain made an extremely poor base for a plug-in hybrid. Specifically, with the increased use of electric power, and the internal combustion engine activating less frequently, the catalytic converter never warmed up properly. As a result, the test cars' emissions actually increased over the stock version. The same study also tested a simpler series hybrid based on a Renault Kangoo, but not as rigorously. Nonetheless, some argue that a more capable series configuration would be a better base for a PHEV than HSD because the larger electric traction motor could handle the full range of speeds, thus conferring true all-electric capabilities and completely displacing petroleum use even at highway speeds. Also, while under charge-sustaining mode the internal combustion engine would act as a continuously-running auxiliary power unit, and would not suffer the same frequent cold-start problems inherent to the Prius design.
Additionally, a study conducted by the aforementioned CalCars concluded that a plug-in Prius would only make technological sense when paired with a relatively small battery pack. As batteries grow more capacious and petroleum displacement becomes a priority over baseline efficiency, the authors wrote, the more a series design is likely to become the rational choice.[113]
Plug in upgrades are available to the general public from Hymotion, from 6 certified installers nationwide at a cost of $9995. Hymotion claims up to 100MPG for the first 40 miles under mostly electric power, and 4.5 hour recharge time for its A123 Systems Lithium iron phosphate battery.[114]
Awards
- 1997–98 Car of the Year Japan[115]
- 2003 Scientific American names Toyota Motor Corporation as "Business Leader of the Year" ("Scientific American 50"; December, 2003) for its singular accomplishment in the commercialization of affordable hybrid cars.
- Motor Trend Car of the Year 2004[24]
- Car and Driver magazine's Ten Best list for 2004.
- North American Car of the Year award for 2004. Nominated in 2001.
- International Engine of the Year for 2004.
- "Best Engineered Vehicle for 2004" by SAE's Automotive Engineering International magazine.[116]
- 2005 European Car of the Year (406 points, ahead of Citroën C4 with 267 points and Ford Focus II with 228).[117]
- 2006 EnerGuide Award (Midsize)[118]
- 2006 Intellichoice Best Overall Value of the Year, Midsize [119]
- 2007 Intellichoice Best in Class Winner :Best Retained Value, Lowest Fuel, Lowest Operating Costs, Lowest Ownership Costs[120]
- Swiss government named Toyota Prius the world's greenest car in a draft study of over 6,000 cars.[121]
2008 Recall
Toyota announced a recall of 160,000 of its Prius hybrid vehicles following reports of vehicle warning lights illuminating for no reason, and cars' gasoline engines stalling unexpectedly. But unlike the large-scale auto recalls of years past, the root of the Prius issue wasn't a hardware problem -- it was a programming error in the smart car's embedded code. The Prius had a software bug.
See also
![](http://upload.wikimedia.org/wikipedia/commons/thumb/d/df/Wikibooks-logo-en-noslogan.svg/40px-Wikibooks-logo-en-noslogan.svg.png)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/d/df/Wikibooks-logo-en-noslogan.svg/40px-Wikibooks-logo-en-noslogan.svg.png)
![](http://upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png)
- Comparison of Toyota hybrids
- List of hybrid vehicles
- Honda Civic Hybrid
- Hybrid Synergy Drive
- Hypermiler Driving - Drivers who exceed EPA est MPG
- Hybrid electric vehicle
- Plug-in hybrid electric vehicle
- Toyota Camry Hybrid
- Toyota eCom
- ACT Hybrid Vehicle Authority
Notes and references
- ^ a b c "2008 Most and Least Fuel Efficient Vehicles (ranked by city mpg)". United States Environmental Protection Agency and United States Department of Energy. Retrieved 2007-12-25.
- ^ a b "Worldwide Prius Sales Top 1 Million" (Press release). Toyota Motor Corporation. 2008-05-15. Retrieved 2008-05-29.
{{cite press release}}
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(help) - ^ http://www.mercurynews.com/search/ci_7319351?nclick_check=1
- ^ Still Miles to Go for the Plug-In Vehicle - New York Times
- ^ InterTran Translation "intertran.com".
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- ^ "The Power Split Device".
- ^ a b "Toyota Prius II Battery Pack". The Clean Green Car Company. Retrieved 2008-05-30.
- ^ Compare Old and New MPG Estimates
- ^ Frequently Asked Questions | Hybrid Cars
- ^ "Hybrid Hype? Fact and Fiction Surrounding the New Technology". Toyota.
- ^ The Hybrid Experience Project
- ^ a b Chang-Ran Kim (2003-10-02). "Hybrids Can Be Cheap to Make, Toyota Says". Rainforest Action Network. Retrieved 2008-05-30.
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- ^ Prius Model History, Clean Green Car Company. Retrieved 2007-12-19.
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- ^ Russ, C., Toyota Pruis (2001), The Auto Channel. Retrieved 2007-12-20.
- ^ Test Drive Notes: Toyota Prius 2001, Car Talk. Retrieved 2007-12-20.
- ^ 2001 Toyota Prius Lineup, Internet Autoguide. Retrieved 2007-12-20.
- ^ Adams, M., Why is GM Crushing its EV-1's?, Electrifying Times, December 2, 2001. Retrieved 2007-12-20.
- ^ Tsukada, M., Aichi's Artisanship in the Auto Industry, Aichi Voice (Cutting Edge).
- ^ More Toyota Priuses Coming to Australia, Australian Car Advice, March 1, 2007. Retrieved 2007-12-20.
- ^ Motor Trend 2004 Car of the Year Winner: Toyota Prius, Motor Trend. Retrieved 2007-12-21.
- ^ a b "Motor Trend 2004 Car of the Year Winner: Toyota Prius". MotorTrend Magazine. Source Interlink Media. Retrieved 2008-05-30.
- ^ Test Drive Notes: 2004 Toyota Prius, Car Talk. Retrieved 2007-12-21.
- ^ Bowden, R. (2004), 2004 Toyota Prius, About. Retrieved 2007-12-21.
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- ^ "Three Versions". Torqereport. 2007-07-24.
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- ^ Less poluting cars, something we all work for (government site)
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- ^ QST rebate for hybrid vehicles Ministère du Revenu du Québec. Retrieved on 2007-08-12.
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- ^ Chapter R-14 Revenue Tax Act Regulations. Regulatory & Appeals Commission, Prince Edward Island, 2007-06-20. Retrieved on 2007-08-12
- ^ Vehicle Banding Explained. London Borough of Richmond upon Thames, April 2007. Retrieved on 2007-08-12.
- ^ Transport and Streets: Eco Vehicles. (Government website). City of Westminster. Retrieved on 2007-08-11.
- ^ Integrated pricing strategies (for parking) Winchester, April 2006. Retrieved on 2007-08-11.
- ^ Integrated pricing strategies in Winchester. CIVITIS Initiative. 2007-07-27. Retrieved on 2007-08-11.
- ^ Discounted Season Tickets - Environmentally Friendly Vehicles Winchester City Council. 2007-05-23. Retrieved on 2007-08-11.
- ^ a b Delgado, Martin. Koo Stark's fury over £7,500 in parking fines - for eco-car she thought was exempt. (News website). Daily Mail, 2007-06-23.
- ^ Avoid congestion charging in London with Toyota Prius Toyota GB. Retrieved on 2007-08-12.
- ^ Congestion Charging | Transport for London
- ^ Andrew English (2007-05-07). "VW's BlueMotion green badge". The Daily Telegraph.
- ^ Roads and Public Places
- ^ "Additional Toyota and Lexus Vehicles Certified for the Energy Tax Credit".
- ^ "FYI Income 9: Alternative Fuel Income Tax Credits". Colorado Department of Revenue, Taxpayer Service Division.
- ^ Exemption for Hybrid Vehicles (Website). State of Connecticut Department of Revenue Services. Retireved on 2007-08-11.
- ^ "State offers incentives to hybrid vehicle buyers". The Southern.
- ^ "Virginia DMV".
- ^ "AB 2600 Assembly Bill".
- ^ "AZ Central".
- ^ "Hybrid Program Free Parking". From City of San Jose Website. April, 2003.
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(help)CS1 maint: year (link) - ^ a b c d e Corporate Incentives (Website). Hybridcars.com. Retrieved on 2007-08-11.
- ^ "Q&A with Google's VP of Marketing" BusinessWeek Online, 2007-08-06. Retrieved on 2007-08-12.
- ^ "Details of Hyperion Solutions' Drive Clean Program". Hyperion Solutions. November, 2004. Retrieved January 12.
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- ^ Gartner, John (2007-05-14). "Hybrid Cars' Fantasy Mileage Ratings Drive Into the Sunset". Wired. CondéNet. Retrieved 2008-06-03.
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(help) - ^ "2008 Toyota Prius". U.S. EPA. Retrieved 2007-12-25.
- ^ http://www.consumerreports.org/cro/cars/new-cars/buying-advice/most-fuelefficient-cars-206/index.htm
- ^ ConsumerReports.org - High cost of hybrid vehicles 9/06: Hybrid cars, gas/electric cars
- ^ "Vehicle details for Prius 1.5 VVT-i Hybrid E-CVT". UK Department for Transport. Retrieved 2008-06-03.
- ^ Nicholas Rufford and Jason Dawe (2008-03-16). "Toyota Prius proves a gas guzzler in a race with the BMW 520d". The Sunday Times. Times Newspapers. Retrieved 2008-05-23.
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(help) - ^ "Diesel hybrids could enter Le Mans". BBC News. 2008-06-13. Retrieved 2008-06-13.
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(help) - ^ a b "Dust to Dust: The Energy Cost of New Vehicles from Concept to Disposal" (PDF). CNW Marketing Research, Inc. 2006. Retrieved 2007-07-27.
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- ^ "No, The Hummer Actually Isn't More Energy Efficient Than A Prius". Better World Club.
- ^ Gleick, Peter H. "Hummer versus Prius: 'Dust to Dust' Report Misleads the Media and Public with Bad Science," Pacific Institute, PDF version via pacinst.org, May 2007. Retrieved on 2007-08-22.
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