There is one street on my route with a series of speed bumps. It never fails that cars will insist on passing me, and then have to brake for the speed bumps. So, they end up slowing me down because I can whiz right over the bumps.
My legs were really tired this morning as this is my 8th day in a row for cycling. Will probably take a rest day tomorrow, particularly since it's supposed to rain, but reserve the right to change my mind!