How much Hydrogen is actually needed to keep a car idling? Any motor will do?

Question

We all know that you can run your car on Hydrogen, so I don't want this to be about yes or no you can't. I'm just asking if you had an unlimited supply of hydrogen how much do you think you would need to keep a car running?

Answer 1

i believe but you might want to go to a site with experts and not random people but i think they are hybrids like gas hybrids they have large batteries to power it when in idle or at slow speeds. basiclly its just a hybrid but with hydrogen as the feul source instead of gasoline