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.