
I guess it was truly easy to use and to start & stop. It's extremely intuitive to operate, with the exception of the turning function (left and right). The maneuverability intelligence is all integrated into the gyroscopic machinery, except for the silly left/right functions which are controlled by a toggle-switch with your left hand. What's the point?
Trevor Blackwell, a robotics inventor-entrepreneur in the Bay Area, has posted an interesting review on the simplicity of building a self-balancing scooter. He even built a self-balancing unicycle, interesting. I guess if the concept is to take off, then low-cost replicas will help the spread. Because, at the current (discounted promo) price of $3,500, I'm not going to trade in my functioning two legs!