I posted an article on the 8th November about a
home system for making hydrogen. I expect this to be the model T of futures systems. I'm sure you are aware of the various techniques for creating hydrogen - solar, biological and nuclear, as well as natural gas , which will be used first. This techology is still in it's infancy - it has not by any means been completely ruled out.
However, I have read that if the storage problem cannot be solved then this techology will not be viable (sorry, I can't find reference). If it is solved, then there will still be enough time to gradually introduce hydrogen as an alternative fuel to run cars, buses, motorcycles, trucks and planes. Unfortunately, many (like myself) are not hydrogen-technology experts so their criticism is not justifiable, but I can refer you to general articles on
fuel cells, and
hydrogen vehicles for nearly up-to-date information.
My impression of the the above vehicle is that it combines the best of battery techology (energy storage) with fuel cell technology (main power source, longer range). I expect there will be further improvements in this combined technology in the years ahead.
Human history becomes more and more a race between education and catastrophe. H. G. Wells.
Fatih Birol's motto: leave oil before it leaves us.