I think it will be many many years before these see widespread use in the US, if they ever do. Do you guys have any idea how long alternative methods of transportation have been around? The bike was
invented in 1817, the motorcycle was
invented by Daimler (of Daimler-Benz) in 1885, and the first production motorbike was put into US production in 1898, 10 years before the Model T. You can already buy electric scooters with the
same approximate distance/power consumption specs as the Segway (for 1/5 the price) and it's approximately the same size (maybe smaller). There's tiny hybrid cars from Toyota and Honda (
Insight sales stats - the Prius are slightly better) that are selling at or below their production costs, and the Honda has better performance stats than some Kias. Plus, there's a few companies that make
custom three wheel EVs, small 4-stroke motorcycles (80cc) with 45 mph top speeds
get 85+ mpg, and larger ones (non-sport up to 1.2L) get 45+ mpg. Despite all the traffic in NYC, people don't really care about it as much as they think they do. They may complain about it, or tell their congressman it's the #1 problem with the city, or they may even carpool to work, but the fact is that there's still really bad traffic in NYC because tons of people don't just want to get to work, they want to use their cars to get to work. It *seems* like a no-effort, cost-effective, compact method of transportation somewhere between walking speed and driving speed would have a huge audience, but it just doesn't happen. It's totally inexplicable.
Plus, these things take up more horizontal space than a person, and they can't turn sideways and move (ie squeeze past each other if there's room for only 1.5 of them). I've spent some time walking around in Manhattan, and it's hard enough to dodge people when you can sidestep and turn sideways, let alone if you can't. In a less dense city like Portland, it'd be easier, but the sidewalks are narrower and there's not as much traffic, so there's nothing really forcing the use of these things.
And another thing (raises finger) you have to stand! Whatever the claims or actual distances/lengths of time you can use it, would you really want to stand for an hour getting to where you were going? 12 miles is a long ways away... just think of something 12 miles from your house. Now imagine it taking an hour to get there. Now imagine it taking an hour on the sidewalk. Now imagine it taking an hour, on the sidewalk, standing with very little motion in your legs, like a 1 hour standing bus ride. That foldable electric bike for 1/5 the price is looking a lot nicer now, isn't it?
My prediction for traffic patterns in dense US cities in 2040: gridlock in large diesel/electric hybrid vehicles.