Autopilot Cart
The glass automatic doors slide open and my cart charges into the store. Signs hanging over each aisle pose a question, and the cart answers by passing through an O ring or smashing an X barricade: head right at the entrance (O) · candy at the checkout is a coincidence (X) · "Limit 3" makes you buy less (X). But even after I let go of the handle, the cart keeps rolling on its own — slam the brakes: "3 seconds before you add it."