I was coming home from Worcester on Rt. 190 doing about eighty in my truck when I looked in the rear view and saw a guy on a Harley coming up on my tail, freaking nutjob was passing me on the highway at ninety miles an hour on his back wheel. I sped up to follow him (at a safe distance) to see how long he could hold it. The guy stayed on his back wheel weaving in and out of traffic for about ten miles and took the Rt. 140 exit on his back wheel all the way down to the stop sign.