A) you are stupid enough to forget that Cars Need Gas,
B) God is kind enough to let you run out of gas in the parking lot of a supermarket that has a gas station,
C) in order to teach you a lesson, neither the gas station, the supermarket, nor the CVS in the same parking lot sells GAS CANS...
D) assuming your engine is not bone dry, three bottles of STP liquid gas treatment will work to start it up and get it the 300 feet over to the gas station. Go jet fuel!
In other mysteries of the day, I slept from about 3 a.m. to 5 p.m., excluding get-up-and-feed-cats-and-pee breaks. So why the hell am I still so sodding tired?