Remixed from tbosley02's design. There are 2 car sizes, 80mm and 90mm. The car and monster truck ones can be intermixed. You can also print mutliple center sections and join together with the included tabs. I used double sided tape to stick to the wall. The larger truck was upsized by rotating tbosley02's model 45 degrees on the plate.

https://makerworld.com/en/models/482867