[mkoesel]

Originally Posted by Obioban

Ah. I assumed he meant something more like this:
https://automobiles.honda.com/clarity-fuel-cell

Yes, that’s why I wanted to clear up the misunderstanding. There’s no combustion in an FCEV, and no exhaust note (which the person you replied to also mentioned). A fuel cell is a refillable battery. It is for use in an electric vehicle, not an internal combustion vehicle.