Re: Can water be used as fuel in a car?

Nice try, but what you are proposing won't work.  The hydrogen in water is 
bound to the oxygen atom. To take the water apart costs an amount of energy 
equal to what you would get from burning the hydrogen later (and thus 
forming water again). So, after the inevitable processing losses (2nd law 
of thermodynamics) I end up with less energy available than I started with
before I took the water apart.