I think that in time HHO gas can be used as fuel in cars, heat at home or work, and eventually provide most energy in the world, alot of people say that the technology and manpower to make and convert everything to water would not be achieved because of the cost.
if you dont know what HHO gas is here is a link that might be helpfull
http://ecohho.wordpress.com/2008/07/27/what-is-hho-and-how-does-it-work/
