Car runs on air?
Compressed air cars or CAVs, might be on your street before you know it. Indian carmaker Tata is already making them. The technology uses compressed air to drive old-fashioned car engine pistons instead of combusting gas or diesel fuel to create a burst of air to do the same thing. The car can cruise at 35 mph with air and then at the highway speeds with any fuel that is combustible.
Would you buy one of these cars?

