Minivan soccer moms, smug Prius drivers and good old boys in their biga$$ pickups top the local list.
(That Prius commercial that showed people picking up other people's messes jsut about killed me!)

Of course it's really the driver more than the vehicle that brings the true DB's into sharp relief;
passing lane pacers and people who ignore the road for their cells, GPS and stereo. I almost got creamed last week by a girl that tried to merge into my drivers door. When I looked through her rear window her face was buried in a center dash nav display; she hadn't even noticed that she almost caused a wreck!