Cars are being developed to run on compressed air instead of petrol/gasoline.
In February 2007 Tata Motors signed an agreement with MDI (Moteur Developpment International). Early in June 2008 Tata announced that they were developing a car for 2008 production that will run on compressed air. It doesn’t sound like it could work, does it?
MDI has developed two types of piston engine powered by the expansion of compressed air: one runs on compressed air alone, the other uses liquid fuel to supplement the compressed air. Under 50kph (31mph) it uses air only. Over that speed the on-board compressor refills the compressed air tanks.
The existing MiniCat vehicle has a horizontally-opposed 800cc four cylinder engine.
The above details were extracted from various on-line sources, mainly Green Car contress.
To find out more, put >> tata air car << into Google and you will find many reports and articles on this interesting subject.