A friend just showed this to me. http://www.youtube.com/watch?v=UffOrwSO-HE Apparently it is designed to help people with disabilities like Cerebral Palsy have a more aligned gait. Looks like a tiny robot to me. I really like the natural flow to the movement. Certainly keeping this in mind when it becomes available! It is still under development and I have no idea when it will be on the market.