i've only ever seen two of them in the wild. one black and the other silver. the silver one is owned by a guy that uses it on the job. he works for a road surfacing company and has it rigged up with a framework that drops a measuring wheel down to road surface level so they can accurately measure distances for submitting bids for road work. i didn't get the mileage figure from him, but he said he had a bunch of miles on it and has never had a problem. the black one is owned by a black guy here in town. he wears black leather gear along with a black helmet. the couple of times i've seen him my first thought is "holy shit, darth vader is on the loose."