Assembly instructions:

1) get frame and motors.
2) Throw the control system and battery (connected, of course) into a cardboard box.
3) Put box on frame and connect motors.

This is of course an early model. The next day we modified it...

We duct-taped the box to the frame so it would no longer fall off on a sudden move.

Next on the list: a METAL box (to duct-tape to the frame).