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bunchanumbers said:
This is a total scam. I once saw this on a prank show where they swap out the part where you put in gas with a empty tank so it looks like water is going into the car. And wouldn't it take more energy than a car engine to split atoms? I just don't think that this is feasible.

Well, generating enough electricity to split water molecules (no atoms are harmed here) via electrolysis is fairly easy, the hard (read impossible) part is to do that and then generate more energy from the 2H² + O² > 2 H2O reaction than you used to split them before.