Many years ago in college I had a chance to check out a hydrogen powered 427 Shelby Cobra. It was fucking insane. haha.
Card made 0 emissions and gives off water. Adjusting different mixtures the car would make about 270 HP on hydrogen and when it was needed, could make 600 hp
Anyone interested should check it out. This was back in 2002 by the way!!
http://www.clean-air.org/Hydrogen%20...en%20Cobra.htm