Actually, I live across the road from the petrol station we use. Having said that, the guy serving was very sniffy when I told him I'd forgotten my purse and would have to park up and run home for it (literally 5 mins tops).
I suspect he caught a look at the car and realised it was probably worth less than the fuel inside it.
OP, I'd have done the same, or at least thought about doing the same, then not done it, then felt guilty about it.