In the 80s a lot of gas stations in California still had a full service line alongside a self serve line. Full service cost more for the gas. They would come to your car with the credit card slider (carbon paper), check your oil, wash your windows. It was also expected to tip.
An attendant at a gas station in Oregon actually washed my window the other day while the gas was pumping. First time I tipped a station attendant in years.