I drive through mountains all the time, and have to fill up my car all the time. GP didn't say anything about multiple stops; what I inferred (because it's literally what he said) was that you can have unequal ascending and descending on a round trip - which is geometrically impossible! And even if we are talking about having to stop and get gas, you still get the same benefit of regenerative braking when you are descending, whether it be the first half or the second half of the trip.

> Your comment makes you sound like a city boy.

Is this supposed to be an insult?