HYDROGEN IS NOT AN ENERGY 'SOURCE.' It is a way to store energy from other sources. This myth, perpetrated by the greens and believed by gullible folks with no engineering background will cause terrible damage if it garners widespread belief.
Hydrogen isn't just laying around to burn. You can't run over to the hydrogen lake and scoop some up. It has to be made. Making it takes a LOT of energy. That energy will come from Nuclear or fossil fuels.
Your basic point is well taken. E.G., Coal to oil is profitable for some huge companies at $35 per barrel (see SASSOL). America is the Saudi Arabia of coal. $60 a barrel oil will bring this, and other approaches to the fore. It will not bring hydrogen to the fore.
And where's the energy going to come from to create all this hydrogen?