My Excavator

I haven't posted in a while, but here is a video of my fully built excavator with my custom additions.  I added two motors to power the treads, a motor to shift between arm functions, and I made the whole thing remote control.  Also, when the arm moves, lights on it turn on to illuminate the way (sorry, they aren't easy to see here).  It's super fun to drive.  Here is the video of it just moving a roll of wrapping paper: