Amazon.com: LEGO Technic RC Tracked Racer 42065 Building Kit (370 Piece) : Toys & Games
RC Tracked Racer 42065 - LEGO® Technic - Building Instructions - Customer Service - LEGO.com US
I created a Power Functions RC tracked racer featuring my own version of a subtractor mechanism, which allows it to be controlled just like any conventional RC car, one lever to go