This won last place in the 2019 ERRF 3D printed Derby Car race. It could be a cool little toy for your desk or something you enjoy crashing and breaking when Thingiverse is crashing and breaking. The hamster wheel spins when the wheels move using a simple gear system. Glue is recommended on some of the inserts like the Thingiverse logo, license plate, and thingiverse.com insert, plus on the wheels or the car body depending on how "fast" you want it to go (it broke apart when I tested it on a steep track because they were just held on by inserting them - overall it fits well but glue is probably a good idea for some of the stuff.)

Use PrusaSlicer color change option for stuff like the gear wheels and hamster wheel, logo and inserts to have it look like the picture.

Here are a few videos of the thing losing multiple races at ERRF (note: the hamster only spins upside down when the car travels fairly quickly....most of the time it stays parallel with the ground to look like its actually 'running' on the wheel):

Remixes from originals on that other website:

Hamster and Hamster Wheel: https://www.thingiverse.com/thing:3142344

Potato Driver: https://www.thingiverse.com/thing:2871770

Print instructions

No supports/brims. I had good luck on the Thingiverse logo insert with the overhanging edges which cover up the edges of the circular hole on the side of the car, YMMV but I had no issues and turned out great on my MK3. Glue where needed (see description).