A mechanical engineer at Purdue University has one-upped the Segway guys with a hands-free scooter that uses the principles of Tai Chi, the ancient Chinese martial art, to keep you from falling on your face.
http://blog.wired.com/cars/2009/03/students-build.html "With a top speed of 15 mph, you'll either find the perfect inner balance of yin and yang, or you'll fall off and break an arm."
Sounds like fun. Maybe the professor will sell kits.
Namaste