Um, like, you know, there was a time in the U.S. when there wasn't a single solitary "service station" where customers were allowed to pump their own gas.* I was a "gas jockey" back in those days - my first part time job. I never got tipped. These days, who knows if they expect it, there are so few places that still give full service. (There was a time when the islands were parallel to the building. The one nearest the building was full service, the one nearest the street [only two, usually] were self-service. This didn't fly, as there were drive-offs even when the gas was so cheap! You don't see that layout much anymore.)
*This would be a good one for those "Today's (insert level) graduates have never known..." lists.