Can’t you just break down water, use the hydrogen to power the electric motor, and I don’t think O2 as a byproduct is bad, now this is of course an ideal condition, but why hasn’t this been looked into more?

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[–] 4 points 2 years ago

You're talking about a spark plug. Water doesn't magically split itself apart, that binding energy has to come from somewhere. Fusion still consumes fuel and generates exhaust.

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