Rentals sometimes charge 10 dollars a gallon if you return it below where you got it. It's not because they then go to a gas station to refill it. They just re

Rentals sometimes charge 10 dollars a gallon if you return it below where you got it. It's not because they then go to a gas station to refill it. They just rent the car to the next customer with only 3/4 of a tank and hope that second customer returns it full.