The menu at McDonalds in the early day was simple. Hamburger, Cheeseburger, Fries, soda and Milk Shakes.
Every one of those items can be made by machines.
I can see a small Kiosk in a parking lot. No sit down service, no counter service. You walk up to a window, swipe your credit card and then using a touch screen select your order. The order will then sent to a window for pickup.
The only employee would be someone to restock and clean up. Everything else automated.
This is what you get with $15 hour minimum wage and employee too stupid to not insult the customer.
People don’t go to fast food for good food. They want basic stuff fast (and cheap)
Isn’t your whole thing in your post just a scene from Idiocracy?
Used to call that an automat.