Even though you showed the backside in the ASTRO BALL CABINET video, and even though there's little sounds to be heard, all the little hints... I just have no idea how you get it to move so quick, and in such a small space! I wonder how much more you can do with the mechanism and the concept.
I made this open view to show all looks "normal", and highly improved the speed of the transportation. I want to improve the design, this was just a "test" model. So more to come!