The Segway never really lived up to its hype, but it does serve a practical purpose as a means of transportation -- and it's a bit more convenient than a bike in some ways. (I haven't been a fan of larger versions of the Segway
(GM's PUMA) because some things just don't scale well. However, I'm not against tinkering with new transportation solutions to try to come up with cool new ways to get around.) If you like transportation gadgets, here are just a few cool-looking projects that offer some extreme maneuverability.
If you'd like to read more awesome and interesting stuff, check out this unrelated (but not entirely random!) Techdirt post