Treadmill-bot?
Is it a completely flat bottom surface on the tracks? How well did it turn?
Any pictures of the arm? Is it made out of diamond plate? Seems like a heavy material choice for an arm. Is it jointed or does it telescope? I see a window motor in the bottom left hand corner, maybe for a wire spool?
Sorry, lots of questions, looks like a very unique design, I can see why they wanted you to wait.
Mike C.