It was rather fun to drop a guy who was being a total arse on the MUP. He passed, with inches to spare, an old guy using a motorized wheelchair (a WWII vet, I've seen him before) with his stupid road bike at a far too high rate of speed. My friend and I chased him down on our laden city bikes and bounced him when he turned on the next surface street. It was rather amusing to watch him flail trying to hunt for the correct gear as we blew by at well over 40 km/h. The only reason we did it was because he was a total jerk to the old guy in a wheelchair.