@TruthSandwich

Yes hydrogen has containment issues longterm too, plenty of concerns around hydrogen.. but still, it has its uses.

As for metal-hydrides used to contain hydrogen, its very effective and not just a theory. The issue is that to create the metal hydrides 1) is probably not economical large scale for cars 2) is highly regulated due to its use in nuclear reactors, so just not allowed.

@Empiricism_Reloaded