1. No, losses similar to cable charging, ie cents per charge impact. People lose more by leaving their roof rack/bike rack on year round, I suspect.

2. Nobody is going to buy these cars except for millionaires (and delusional credit-hounds), so that's not a problem either.

It might not work for you, and that's cool, but for someone spending that much on a car it's just a small percentage increase in lease payments. And on the Porsche they might have spent as much on a custom colour as on this item.