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Car of the Future or a Lot of Hot Air? Tue Oct 29,12:41 PM ET By Rebecca Harrison PARIS (Reuters) - Visionary 19th century French writer Jules Verne once described a fantastical future world where cars would run on air. He may not have been totally wrong. Inventor, car enthusiast and environmentalist Guy Negre has built a car powered by compressed air and hopes it will be chugging along roads across the world within the next few years. Inside Negre's car, cold air compressed in tanks to 300 times atmospheric pressure is heated and fed into the cylinders of a piston engine. No combustion takes place, so there is no pollution. In fact, says Negre, the air from the exhaust pipe is cleaner than the air that goes in, thanks to an internal filter. The car can be refilled with air at home using an electric compressor and Negre hopes that, one day, drivers will be able to recharge the cars in filling stations in three minutes for as little as $3. The air car, which he says will cost $6,700, looks a little like DaimlerChrysler's easy-to-park Smart city car, with one row of seats wide enough for three and a curved, pod-like front end.
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