Easier: put it on a test bench, let it run (spin wheels on rolls, car stays in place) and see what the odometer says.

Except it’s German for bath, and the pic has no tub.

Nah, it’s the power plants & grid managers.

Private solar panels are reducing electrical grid dependancy and they need home BEV charging to compensate, because they can’t monopolize hydrogen production as easy as the grid.