The DIYRobocars [1] that they mention is awesome. I wish they had something similar here on the East coast!

[1] https://diyrobocars.com/

3D printed legos? There are better solutions for rapid hardware prototyping. See the following:

https://www.instructables.com/id/How-to-Build-your-Everythin...

https://driftcar.pelablocks.org/ has the specific models used to pimp a 1:10 drift car

BITD we used Meccano - https://en.wikipedia.org/wiki/Meccano