" The track " 1940s Los Angeles conveyor system drive in restaurant.
Each of 20 tracks , arranged radially around the kitchen, send a box containing a glass of water, pencil and notebook out to each car.
Customers write their order, have a glass of water , and the box is sent back into the kitchen, with the order and the payment.
The food is prepared, and sent out on the rail to the customers car, with the change.
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