Karl,
Mind you I'm not discounting your information, I really don't know much about alternate fuels, not even sure if this product falls into that catagory. But I'm not sure we're looking at the same item. The one I've found information on, albiet limited, runs off of according to one artical "
distilled water and baking soda" and the other states "The Hydro 4000 can be fitted to any vehicle for a very reasonable $1,200 (£600) and
runs purely on water." Not sure what might be true now, Commercial hydrogen, water or water/baking soda. Any one eles have information to add or know anything about this product