Important thing is there are multiple ways to produce hydrogen. Cheapest is through methane, but that’s only because methane itself is cheap. There are other methods of producing hydrogen and the more demand there is for it, the cheaper it’ll get. Especially when you consider there won’t OPEC to mess around with prices by rigging production against demand. So it would be smart to focus on fuel source which can be easily produced anywhere and can provide similar performance like current ICEs.