And pray tell, where does the electricity to recharge the battery come from?

I don't think that's correct, the alternator is connected to the engine via a belt directly. When the engine turns, so does the alternator.

But even if it were so, in order to roll a car downhill, you have to get it uphill first. That consumes fuel, moreso than driving on a level surface. This additional energy is then stored as potential energy, thanks to the gravity field. So even then you need fuel.

no, you're right. I fucked up that sentence
alternators use gas, but they only strictly require movement to charge the battery.
also, it was implied that you'd either push the car up the hill or just already start at a higher elevation. "what goes up, must come down" only applies to things leaving the ground

Well, if you push it, you burn your fuel, that being food. Energy cannot be created.

From your ass dawg

The walls are cold in Russia.

Cyrus, don't you have some offs to fuck?
Fuck off