That's true about Newton, but this is not creating hydrogen out of nothing though. It's merely using electrolysis, I think, to convert plain water into usable hydrogen, which is essentially how a hydrogen celled car works.

From what I've read, the idea is that when you inject hydrogen gas....called Browns Gas or something like that....into the engine, it tricks the car into sending less regular fuel and the hydrogen (which is more efficient per volume) more than makes up for the missing amount of fuel. Kinda like trading gas for air per se. Atleast that's how I'm understanding it.

One thing I did read was that on fuel injected engines you would need some type of special adapters for it to work properly and some companies claim that "cheapo" imitation kits don't include that part.