Five-seat concept car runs on air

An engineer has promised that within a year he will start selling a car that runs on compressed air, producing no emissions at all in town. The OneCAT will be a five-seater with a glass fiber body, weighing just 350kg and could cost just over £2,500. It will be driven by compressed air stored in carbon-fiber tanks built into the chassis.
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The tanks can be filled with air from a compressor in just three minutes - much quicker than a battery car. The designers say on long journeys the car will do the equivalent of 120mpg. In town, running on air, it will be cheaper than that. "The first buyers will be people who care about the environment," says French inventor Guy Negre.