The device uses a cheap quarz DIY clock (https://www.amazon.de/gp/product/B08SJDZHLT/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1) as a motor. Be sure it is the version with 13mm shaft 56x56x20mm (. The turntable plate is attached to the minute gear/hand of the clock. So the Turntable turns 360 degrees once an hour. In my opinion - quite cute and subtle.
But well, if you like it a little more profane, you may use it as a mouse mover.
Enjoy
Inspired by: https://www.instructables.com/3-Mouse-Jiggler-Keep-Your-Computer-Awake/
P.S. the truck is part of Devin Montes puzzle box: https://www.myminifactory.com/object/3d-print-tiny-toy-box-packing-puzzle-143389
The author marked this model as their own original creation.