Out of the gait: Robot ranger sets untethered walking record at 14.3 miles
The loneliness of the long-distance robot: A robot named Ranger walked 14.3 miles in about 11 hours, setting an unofficial world record. A human — armed with nothing more than a standard remote control for toys — steered the untethered robot.
More Info: http://www.sciencedaily.com/releases/2010/07/100722143905.htm