TinkerCars was a short lived toy startup idea with goals to teach the physics of automotive design through play. As a counterpoint to video games and black boxes of technology, the idea here was to design a compelling RC car whose physical geometry and visible gearing was easily adjustable so kids could see how simple changes to various aspects of the car would greatly effect is performance. Size of tires, length of wheelbase, shock absorber dampening and motor gear ratios were all reconfigurable without tools. Rock crawlers with big tires, short wheelbases and high torque gearing could morph into a long wheelbase, high RPM drag racer.  All this while serving as a platform for creativity with Lego attachment and paper craft car body attachment points.