Likewise anecdotal: At least in the area where I live (Salt Lake City, Utah, USA), there seems to be a sharp rise in drivers who tailgate dangerously close on the freeway, especially in the carpool lane. I can be going 9+mph over the limit, and cars will still come flying up from behind, follow dangerously close for a few minutes, then illegally pass over the solid double white line so they can proceed 2-3 mph faster. And the drivers look so pissed off. Like it was a major insult that they were temporarily forced to drive slightly slower than their preferred speed. Yikes, people. Check your priorities.