Schadenfreude:
I was driving home from work this morning on the highway, 65 mile/hour speed limit, and I was doing not quite 70 in the center lane. A Mitsubishi came zooming up behind me, rode right up my tail, then swerved hard to pass me on the right, rode hard up the car to my right's tail, then swerved hard just in front of me. About a mile later, the Mitsubishi was pulled over by an unmarked police cruiser.