I like the possibilities of hydrogen, especially since it is so abundant but getting enough of it to be able to run hydrogen-only is a problem. I heard that the most efficient commercial electrolysis hydrogen generator is only 60% efficient - it would take too much energy and too much time to get a usable amount. Then there's the problem of compressing it and storing it to take it mobile. I think you'd need a 10,000 lb tank for decent range (big and $$$). This equipment isn't cheap.
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