I saw a guy just last night riding a Segway not holding the bars. He was just free standing and doing all kinds of twirls and circles, not to mention simply driving off. While this Honda gizmo looks cool, the Segway does what you need w/o the side movement.
The one thing I did wonder is if one can sit down on a Segway. I agree about the back thing and being to both sit and stand would be an advantage to thwart fatigue. I know that sound funny, but using your back in a different way can make it sore.
You know that.
