Print your slot car yourself.
VW GT3 version.
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
With a vacuum thermoforming tool = (Formlabs 10K)