surely the amout of electricity this uses must be quite high.

agreed

That's just stupid. The electricity is the energy source! This has been the predominant way of producing hydrogen gas from water for a long time. 

Electrolysis is nothing new and only if the electricity is produced in an enviromentally friendly way this would be any good.

A battery powered car would be better.

I like VODCARS,that's awsome lol

surely the amout of electricity this uses must be quite high.

I'm surprised how the guy is still alive... I'd think the govt. would like to keep this revolutionary invention as a secret.