Describes how service stations have changed over time - up til 1957, of course.
In the past, service stations were not as common and were often found in the back of local hardware stores.
They didn't offer the same services as they did in 1957 and people had to pump up their own tires and fix their own cars.
However, as the number of cars on the road increased, service stations became more important and began to offer more services.
In 1957, service stations were more common, have large storage tanks and big tank trucks deliver gasoline to them.
The attendants at service stations check the oil, water and tire pressure, and wash the windshields of the cars they service and sell gasoline and oil.