The air car is a car being developed and manufactured by Moteur Développement International (MDI), founded by the French inventor Guy Nègre. Wikipedia does not have an article with this exact name. ...

The air car is powered by the air engine, an engine designed specifically for the car. The air engine is an emission-free piston engine using compressed air as fuel that was invented by Guy Nègre, a French engineer. ...

The engine is powered by compressed air, stored in a carbon-fiber tank at over 4000 psi. The engine has injecition similar to normal engines, but uses special crankshafts and pistons, which remain at top dead center for about 70% of the engine's cycle; this allows more power to be developed in the engine.

Though some consider the car to be pollution - free, it must be taken into acount that the tanks are recharged using electric or gasoline compressors, resulting in some consumption of fuel.

This engine is being manufactured by CQFD Air solution, a company closely linked to MDI.

The cars MDI will produce are not being sold (May 2006), and have been said to be coming into production "soon" since at least 1998. It was, for example, announced to make its public debut in South Africa in 2002^[1], or "within six months" in January 2004 ^[2]