Oh, I can see this at McDee’s...
tap tap tap
two cheeseburgers, medium fries, diet coke, swipe, ding!
I think that is only a matter of time. Further, I think the mechinization of fast food places is very near.
Tap, tap your order onto a screen then the computerized fry basket automatically drops into the fryer, and the cheesburger conveyer process starts and the drink machine automatically dispenses. Done. A total of 3 or so workers max at each fast food location.