Just imagine that instead of spewing out a noxious mixture of carbon dioxide, carbon monoxide, hydrocarbons, benzene and particulates, your car’s exhaust emitted only water. Yes, that’s right, just good old H2O, in a form so pure you could drink it.

http://www.iol.co.za/motoring/industry-news/so-what-s-wrong-with-hydrogen-cars-1.1856818#.VVb92M6sbdm