[currymj]

The idea dates back even further than that, to the failed but fascinating Keedoozle, the second venture attempted by Clarence Saunders, founder of Piggly Wiggly, after his financial ruin attempting to corner the market in his own stock.

You'd go around the store, your selections would be punched into a card, and at the front your food would be automatically delivered via conveyor belt.

https://en.m.wikipedia.org/wiki/Keedoozle