I have a 3d printing filament factory and I'm a long time F1 fan, so obviously i had to at the very least print myself a couple of these toys:
https://www.thingiverse.com/thing:1193309
Equiped with some proper motors, are pretty damn fast. Generally mechanics in this model is pretty bad, so it's a good idea to model Yourself a drivetrain suited for a motor and at least some travel limits on steering.
If this thread goes on, I'll gladly print the outcome/support with some decent material.