Bad driving is contagious.

On my commute to work this morning, I was marvelling at how inattentively, aggressively, and/or just plain badly the other commuters were driving. Then I realized that in order to hold my own among them, I had also begun driving more aggressively. How many of these drivers were driving more reasonably before they encountered their first carrier of bad driving, and for how long? Someone needs to do a study.

Another thought about driving and contagion: does anyone else laugh whenever they see trucks for the shipping company called MS Carriers?