LEGO Technic 8043 Model B - Tracked Loader - YouTube
For the Power Functions fans out there... 8043 with 1 XL motor, 5 M motors, 3 receivers/remotes. From Jergen's Technic Corner mod along with my own small updates. I prefer the claw
PC Gamepad Full RC LEGO Power Functions 8043 B-Model Tracked Loader by Arduino and Processing - YouTube