"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." Original article can be found here. http://blog.wired.com/cars/2009/03/students-build.html … [Read more...] about (Letter from ecodelta) Tai Chi Scooter One-Ups The Segway