Wow! Who knows hey?
Alternatives for electricity for the future for some applications will have to be found because as have been pointed out inter alia on this Forum, charging of batteries will not be feasible in some cases. Hydrogyn might be such an alternative. Some drawbacks might be the danger as this gas is highly flammable and explodes when ignited even more than petrol making it perhaps not feasable for every day use. I might be wrong, but I suspect the manufacturing cost of H relative to its output might be substantially higher than battry stored electricity which again would be a negative for general use. For fringe applications somewhat higher costs might be acceptable and the danger aspect might also be easier to handled. The future certainly is interestimg and I hope to live to see what it delivers. I am pro electricity for vehicles and I am sure solutions for present day obsticles wiil be found.