That's a great post, always happy to be educated.Potentially yes, hydrogen is the eventual future for our energy needs, the technology already exists and can be molded to our current societal infrastructure. The issues surround creating it in the first place. Hydrogen in and of itself isn't zero emission either sadly (burning it gives off nitrous oxide, a much denser greenhouse gas) so we'd have to focus on 'green' hydrogen through electrolysis, which is an energy sapping procedure in order to create it to be used in HFC cars.
Only something like a nuclear power station could be feasible argued to generate the required energy to create green H2 without a loss on other energy requirements as, although solar and wind can do it, the amount of energy required is massive or not cost productive.
I must be honest I thought that hydrogen was clean burn, only producing water. Obviously I haven't researched enough!
What I do feel is that batteries haven't really had a massive step in improvement in recent years, they would have to be half the weight, or produce twice the output than they currently do to be viable. Not to mention the charging problems, and the strain on the already stretched grid if everyone jumped on board.
Given that history shows evolution rather than revolution regarding battery cells, I find it interesting that we await this breakthrough whilst knowing that it really isn't about to happen.
The hydrogen option I feel is more likely to produce a clever solution going forward. I base this on gut feel more than practical knowledge though.