know what I'm about to ask is totally dumbass, be gentle with me, I'm not seeing it. So you've got hydrogen. It separates out, runs the engine and becomes water. As water IS hydrogen (and oxygen!) instead of dripping it out of the exhaust pipe - and I'm not a scientist, just been thinking about this - couldn't you separate it BACK out into hydrogen and oxygen and send it round the circuit again? It's just it seems to me that as you've got water coming out, the hydrogen's still there to be reused, so you could have a hydrogen - water - hydrogen - water setup going round and round the engine till the water evaporates, I suppose.
And if you've got that going, couldn't you power the car on water in the first place? Once you've got the circuit started, you could just top it up with water every so often, couldn't you, and the separator - which I admit is the bit I'm scientifically not so certain about - would just separate the hydrogen out from it. I mean isn't it just electrolysis? And there's electrolysis cells around, aren't there?
Yours puzzledly - I know this must be dumbass or they'd be doing it, wouldn't they? -
Chris.
