That extra ~1 gallon a car really has when the low-fuel light shows up on a car's dash. You think you're totally out of fuel but you actually have another gallon to go....it's a courtesy gallon!
I have been driving on this courtesy gallon for a little too long; I should probably go to the gas station.
I was afraid about breaking down on the road but remembered I still had my courtesy gallon!
Prices shown in USD.
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