> large, impassable clumps of vehicles are less likely to form I'm starting to think that there are a large number of people that feel some sense of comfort in

> large, impassable clumps of vehicles are less likely to form I'm starting to think that there are a large number of people that feel some sense of comfort in these groups. Something that I've noticed is that a passing car will often slow up as they are passing another car so as to pace them. It drives me crazy.