[KTM rider]

"Hydrogen hasn’t been used much as a fuel because it leaks out of any container"

and when this hydrogen escapes into the atmosphere, who is going to go collect it and turn it back into water ?

Al Gore ?

Santa Clause ?

[wildcard_redneck]

"and when this hydrogen escapes into the atmosphere, who is going to go collect it and turn it back into water ?"

There is more free H2 in the atmosphere than CO2 and it is constantly being taken up by soil bacteria and it is reactive enough that it combines with oxygen and other elements in the atmosphere and very rarely reaches escape velocity from the Earth's atmosphere.

Do you know what books and internet search tools are and how to perform basic research for yourself? If you do then it appears that you are just committed to bray like an ignorant jackass and embarrass everyone.