Vintage Radio Shack / Tandy "Computer" Battery Powered Toy Delivery Truck - READ

A Vintage Radio Shack / Tandy Toy Delivery Truck Originally came with yellow discs with different patterns that made the truck perform a preset route. NOT WORKING - Nothing happens when I put batteries in. Yellow discs are missing. One of the red parts on the bottom is missing. Plastic has yellowed. Still a nice decorative collectible. Sold as-is, no returns.