Would this is a hoax be an answer or is the question out of scope?

hydrogen-in-a-gas-tank

Proving, disproving, or simply rejecting these claims is outside the scope of this site. We've looked at similar situations before:

Could we make a space for disproving popular life-hacks?

So this would be off topic.

This may be on topic on our Skeptics site — please see the Help Center to check — however, this type of myth-buster fact-checking is outside the scope of this site.

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