well....if you ride a bike often enough you can learn to balance without having to move...you must have seen bicycle courier's doing this, plus you become more comfortable riding in city traffic the more you actully do it
...hey...I don't care if any of you want a Segway, go right ahead, if I had a spare $3000 just lying around I'd prolly buy one too, just have some fun on.
I prefer a really good mountian bike (which can cost must more than a Segway)...each to there own 'eh