I'm not sure what is up, but I've noticed it too. Last year it was the other cyclists that were a bit nuts this year it's the steel coffins. I've seen some silly stuff, not just driving and talking on the cell, but doing things like cutting off the bike lane, and not look when you peer into the fish bowl wondering what sort of mouth breather they are, and they know they did it cause they're rolling up their windows.
What really gets me is the head case that thinks they are doing me a favor by stopping where the bike path crosses a heavily trafficed road. They had idiots behind them barreling down not paying attention and swing around them. I don't feel comfortable with this situation, and wave them through, some kid is going to buy it cause of them.
Finally the guy that feels I am taking up more than my share of the road side, and swings into the oncoming lane to "avoid" me. That bothers me, I don't want to be picking some dude out of the trees.