Who are the worst? I don't run into enough problematic motorists to remember what "class" or "classes" the last one might have belonged to compared to the class of the next one I run into weeks, if not months, later.

More to the point, every day I encounter men and women, of all races, from Civics to Hummers, from taxis to buses, from tractors to cement trucks, from gang bangers to doctors and lawyers, from narcissists to near saints, you know name it, and they all consistently treat me like a vehicle driver. Not that I give them much choice...

The occasional exception is so rare it's hardly worth noting, much less classifying.