Inventor Bruce Honaker calls it Wheel Anti-Reversing Technology. Here is my demonstration of how well this technology works, filmed on a hill in front of my home. See my Orbit article for lots more details, including survey comments about the potential for this concept.
Other August 2008 Stories
Balance Your Stride - Two drills to help you equalize your balance and strength on both sides.
Why Do I Fall Down?- We all take a tumble now and then. Knowing why means less crashing.