You go the the gas station more often for snacks, soda and other needs more often than fuel..
I stopped the other night to pick up some milk on the way home, they always always ask if you have fuel.. I said nope, I should be able to get another 300 miles out of my 6 gallons thats left in the tank
The cashier didn't even think and just rang up my milk.. hopefully after i left it registers that 6 gallons at 300 miles is 50mpg..