Haha I never knew there was a real person attached to that myth. I was hearing about that as a big conspiracy theory from teachers when I was kid all the way here in Australia.

That's interesting he did produce an actual machine that could move though. I was reading the Wikipedia about him and they don't go in to that exactly. They point out that his design and vehicle were just using conventional electrolysis and thus couldn't work as claimed, but it still moved. What was the catch then? It uses a battery to do the electrolysis, does it just use up all the battery to inefficienly split out the hydrogen using more energy than gained from the hydrogen in the process? Making it a really weird electric car?