Remember when you could sit in your car and order food and they'd bring it out to the car and attach that tray to your side window? (There was even a place where the waitress were on roller skates) Well A& W was one of those places.
My sister and I used to exercise horses and there was an A&W nearby. So we rode over to get root beer floats. For some reason they didn't want to deliver to us on horseback. They made us hitch the horses to the side of the building and walk to the ordering window.