A few weeks ago their was a link here to a story abut renting the new Segway scooters. The rental location in the article is about two blocks from my apartment. While I haven't tried it out myself yet, they do look cool. Yesterday I saw the results of my first Segway accident. The trail was entirely blocked by EMT's, a stretcher and group of oglers. A firetruck and an ambulance were near by.
I think they only give you the low power key to make them safer, because I never see anyone going very fast, I asked the man's friends what had happened, they responded he just fell off. While I'm sure it could happen to anyone, it does make me think of all the future problems these devices could cause.