[American Number 181269513]

It's a vertical lift. There is a video at the link. Here is a pic.

[Amendment10]

Thanks for referencing that article American Number 181269513.

Example YouTube videos showing this technology.

• Taco Bell Defy 2022 (42 sec.)

• Taco Bell Defy order delivery chute in action! Amazeballs. (10 sec.)