on my morning commute I drive very fast. I also leave a car length between me and the guy ahead of me. As speeds fluctuate I sometimes let my distance get to two car lenghs, never more than that. What pisses me off is the A-holes that see a 2 car length opening while we are driving just over the speed limits and they think it is an invite to get in front of me. I can sense these bastards and I automatically close the car length to one so they can't F me over. On the rare occassion when someone squeezes in front of me, putting numerous lives at risk with their idiocy, I will wait for a chance to get in front of them and do it.