[Melana wrote: "I don't know about the Segway type of movement. It seems like it needs a bit of tweaking yet."]
It's nearly there, but there are a couple of complications. The principal one is range -- even with the high-powered version, the range between charges is (as of the last time I checked) right at the limit of the 15-mile round-trip commute I have to my Metro station.
A personal obstacle: My daughter (age 24) told me about 6 months ago that if she ever saw me on a Segway, she would permanently disavow any relationship between us. She thinks Segway is the ultimate in dorkiness.
She might have a point. The DC Metropolitan Police Department has put its downtown (Federal Triangle area) foot patrol cop on a Segway. The sight is surreal -- a Segway overloaded by a 300-pound, blue-clad Sponge Bob/Squarepants wearing a Carolina Blue/Infantry Blue bicycle helmet (i.e., the color of this web page's background, for benefit of our colleagues in other realms). For his health, his superiors should have kept him pounding the concrete.