They are supposed to have a range of about 14 miles on a charge. I borrowed one of my friends Segways (Hes loaded and has several for his farm). I ran it into the little town nearest us. It was a 3 mile ride (all of which was not a pleasant expwerience=lots of jostling ). The damn thing was just about crapped out by the time I returned. I had to call my wife and we loaded the damn thing on a truck bed and drove it to my friends place and started the charger.
Their "range" is dependent upon topography, weight of driver, road conditions etc. 6 miles is stupid for something like that. I can get a battery bike much cheaper and itll have a better range, and with Li batteries they make more sense and are more intuitive than a Segway.