Like a lighthouse on the ocean shore, gas stations light up the side of the highways.
It the US, these are not only source of fuel, but you can eat in a restaurant, buy spare tire, scuba diving gear, any electronic device you imagine. Junk food, pop and coffee are a given. You can take shower, shave! There is really seems to be no limit.
I have seen truck drivers buying tons of Christmas gifts for their kids! Makes sense!!!
Most American gas stations on major highways are equiped like a super store. RaceTrac is just an example.