>>And, theoretically, you can fill up your car the same way you can with diesel or gas.
No, you cannot. H2 is not a liquid at STP (standard temperature and pressure). Diesel and gasoline are. This matters, bigly. H2 is a light, devilishly small molecule that likes to leak and likes to embrittle steel. To have enough of it to do useful things, it needs to be in a tank at fairly high pressure. This is expensive/difficult
Additionally, there isn’t much of it, at least not in the form needed for a fuel. H2 must be manufactured. What is your input energy source?
H2 is a fake bill of goods only a government regulator could love.
I said you can fill it up the same way, theoretically. You plug in the nozzle into your tank and squeeze.
Using some the same way is not the same as being the same.
Well, I don’t see the gov. pushing for it like solar and wind, and if at least some of the money our tax dollars spend on solar and wind went into r&d of hydrogen scientists could develop a cheaper way to manufacture it. I have no doubt of that.