Did they ever use "car hops"? We just got a Sonic with that service, but in the Summer with temperatures of 120° and above, that has to be unpleasant for all.
I do like the outlets that offer online ordering and pickup upon arrival without getting in a long line. The nice thing is that it overcomes the unintelligible mike/speaker at drive-throughs that generally result in messed up orders. About once a week I enjoy some guilt-ridden fast food, so I pick the places that have that kind of service.
Yet I am amazed by the people in my generation who can't text, don't know how to order online, etc., etc., etc.