Im a little more tolerant now of Yankee Mass drivers. He then moved up to another car and did it again, even though he could have ducked past. Looking back, I think maybe I should have slowed to 40 or 45 just to teach him a lesson, but then this guy seemed like the kind of bastard whose brain was about the size of a donut hole from Dunkie's, and who would turn my brand-new car into a sheetmetal waffle without thinking. I have too many stories to mention here. Although my favorite experience recently was someone cutting accross all four lanes of Storrow Drive right at the light trying to get to Rt 28.
Road design is a major draw back here.
Roads constantly merge 3 lanes to 2. Four lanes to 2. They criss-cross every which way. The biggest cause of slow downs in traffic is the stubborness of people when it comes to any type of merge. If people would use what I call the zipper method of merging it goes so much faster.