Print your slot car yourself.
Imagine the satisfaction of driving a car on the track that you made yourself.
Imagined with a Porsche Singer and Williams engine.

https://fr.motor1.com/news/176395/porsche-911-singer-williams-moteur/

Technical skills are required to have the chassis adjusted and for everything to be functional. Mechanical work to turn the concentric wheel is important
(under construction interior and glass)