Christmas Rail Car 2

This is rail car number two in what (I hope) will be a series of ten, one published every two weeks until Christmas. This O gauge car (wheels, axle, coupler and bed are all 3D printed plastic) is part of an active train. It requires a hexbug (available on amazon.com) to run around in the car's bed.
http://youtu.be/3oII3hsYjag