No, it's not possible. Gasoline is oil based and contains hydrophobic molecules.
But it is possible to recycle engine heat with a small steam motor on a conventional internal combustion engine. Saw the article in popular science.
I did read once upon a time though, about how the Nazis tried to make gasoline from seawater.
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Sig? No thanks, I'm a non-smoker.
Brotherhood of the Double Cross.
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