There's a new segway-like vehicle: It's called SoloWheel and it's basically a simpler version of the former. It does look like much harder to "drive" than the segway, though, so i seriously doubt this will pick up any momentum, if you catch my drift :)

Here's the link to the engadget article and the essential videos. The first is basically an ad, and the second is an interaction of a normal person with the device for the first time: