Here's yet another question about renting from Dollar! We're going to rent for one day, picking up at the airport and returning it to TI. We aren't going to do much driving. If we end up not refilling the tank, how much per gallon will we pay Avis? It looks like it wouldn't be a full tank. Even if it's some crazy amount, for the gallon or so we might actually use, it might be worthwhile to skip the gas station.