My first simplified car model was the 1969 Ford Mustang. It still is one of the most downloaded things I published. In the course of a attendance at a maker fair I revisited the model and upgraded it to use layers of various width. As I wanted to create a larger model for th fair I used 10 mm as the standard width, 18 mm for the colored core and 4 mm for the thin layers. In order to create the impression of actual tires I used two different woods. The new car interior with seats was another enhancement I adopted from other models I published.
By the way the new (larger) size resulted in a more dramatic angle for the photography. It's simply possible to get the object bigger on camera.
I cut the model on my Sorotec Basicline using a 2.4 mm spiral toothed endmill for the 10 and 4 mm material and a 4 mm single flute for the 18 mm wood. The drawing features pinholes to simplify the alignment of the layers.
Keep in mind that you need to scale all materials if you want to scale the model.
Visit https://www.zenziwerken.de/en/Spielsachen for more toy designs.