[poprock]

and the bit of hydrogen made with electricity... its about 10% efficient, batteries are 50-90% efficient. (lead or lithium) so you can already see how much power you're throwing away, and even after that, theres the rather poor efficiency of a piston engine or fuel cell to burn the hydrogen back into power or electricity.

and with the poster above, most hydrogen is made by "stripping" LNG so that the carbon ends up as co2, and some of the hydrogen can be collected. again, throwing away tons of energy that could have just as well (or actually, better) have fueled a car.

As one who has fiddled with hydrogen on many vehicles, my homemeade electrolysers worked well, but for the average joe are too much to maintain. 10% -20% is easily achieved but as it is concurrent with the dinosaur's feedbag we need to look further ahead to electric.

 

[poprock]

I am appealing to the moderators of this forum to please restrict posts such as those from zero. My reason for subscribing is to learn about ev's, not hydrogen. Been there, done that, moved on.