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An automobile or motor car is a wheeled motor vehicle used for transporting passengers, which also carries its own engine or motor. Most definitions of the term specify that automobiles are designed to run primarily on roads, to have seating for one to eight people, to typically have four wheels, and to be constructed principally for the transport of people rather than goods.[1] However, the term automobile is far from precise, because there are many types of vehicles that do similar tasks.
As of 2002, there were 590 million passenger cars worldwide (roughly one car per eleven people).[2] Around the world, there were about 806 million cars and light trucks on the road in 2007; they burn over 260 billion gallons of gasoline and diesel fuel yearly. The numbers are increasing rapidly, especially in China and India.[3]
Contents
[hide] * 1 Etymology * 2 History * 3 Production * 4 Fuel and propulsion technologies o 4.1 Petroleum fuels + 4.1.1 Diesel + 4.1.2 Gasoline o 4.2 Biofuels o 4.3 Electric o 4.4 Steam o 4.5 Air o 4.6 Gas turbine o 4.7 Rotary (Wankel) engines o 4.8 Rocket and jet cars * 5 Safety * 6 Costs and benefits * 7 Environmental impact * 8 Other negative effects * 9 Future car technologies * 10 Alternatives to the automobile * 11 See also * 12 References * 13 Further reading * 14 External links
Etymology
The word automobile comes, via the French automobile, from the Ancient Greek word αὐτός (autós, "self") and the Latin mobilis ("movable"); meaning a vehicle that moves itself, rather than being pulled or pushed by a separate animal or another vehicle. The alternative name car is believed to originate from the Latin word carrus or carrum ("wheeled vehicle"), or the Middle English word carre ("cart") (from Old North French), or karros (a Gallic wagon).[4][5]
History
Main article: History of the automobile
Ferdinand Verbiest, a member of a Jesuit mission in China, built the first steam-powered vehicle around 1672 which was of small scale and designed as a toy for the Chinese Emperor that was unable to carry a driver or a passenger, but quite possibly, was the first working steam-powered vehicle ('auto-mobile').[6][7]
Although Nicolas-Joseph Cugnot is often credited with building the first self-propelled mechanical vehicle or automobile in about 1769 by adapting an existing horse-drawn vehicle, this claim is disputed by some[citation needed], who doubt Cugnot's three-wheeler ever ran or was stable. What is not in doubt is that Richard Trevithick built and demonstrated his Puffing Devil road locomotive in 1801, believed by many to be the first demonstration of a steam-powered road vehicle although it was unable to maintain sufficient steam pressure for long periods, and would have been of little practical use.
where is this from?
Kelevra27 2 years ago
Mission impossible
WTFBoomBlog 2 years ago