> Hydrogen cars are chemical.

FCEVs are chemical in the same sense that BEVs are, because a “fuel cell” is, like a battery cell, an electrochemical cell.

The only real difference is that the “fuel” and “waste” are inside a battery, but come from and go to the outside in a fuel cell, which means that an FCEV can be fueled (and exhausts) like an combustion engine vehcile, despite being fully electric.

> Hydrogen cars are chemical

So are batteries too

Hydrogen Fuel Cell vehicles have a large battery, larger than the ones in a Prius.

This is totally incorrect. A fuel cell is a type of electrochemical cell. A fuel cell car has an electric motor just like a conventional EV. We often use the terms “BEV” and “FCEV” to differentiate them.