I live in Charleston, SC, usually one of the cheapest places for retail gasoline in the nation. This Sunoco often has some of the cheapest prices in the city. I filled up Regular Unleaded $3.02. I am sure that is below the national average-
At the same time- I caught the following picture of an Air Force C-17 on final approach to the airport. I am sure that aircraft is quite a fuel-guzzler.
Pardon the quality of the photos- I just had my camera phone handy.