Earlier quoted context omitted.
This seems like I can lug around inside buildings and whatnot, unlike a bike. I don't trust biking to a lot of places, because cretins will take whatever they can: the wheels, the steering wheel, anything that isn't bolted on, really.
You could get a decent folding bike (a Dahon or Brompton) for way less money than that, and folded, they're not much bigger than this thing. Plus they're street-legal in most places, likely unlike this thing, and you get the exercise benefits of riding.
That's a very neat concept, cheers. I can imagine that that would have been very convenient for the commute I had this last spring - bicycle to the train station, take the train to campus, and then bicycle through the campus.