can we use air to power cars?

[†RadicalDreamersâ€]

is it possible to use air as the main power of cars?

 

[Lazyeddie]

We can make hydrogen cars.

And water is 66% hydrogen.

 

[littlerobbergirl]

compressed air can be used as an energy carrier; electricity is used to compress it, and releasing the pressure provides the power.
http://news.bbc.co.uk/1/hi/sci/tech/7243247.stm

 

[R. M]

Yea - it is called a "sail"