The Long-Distance Journey of a Fast-Food Order
nytimes.com
nytimes.com
They also don't make much sense in daily life: are people really so busy they can't stop to eat?
In my experience a drive through is a dine-out experience. It's not so much we're eating in our car and not stopping, but I'm going to go get fast food to go.
There is, however, a lot of lip service about both energy conservation and healthier lifestyles, and in that context, drive-throughs represent the antithesis of both.