This morning, I learned that I would do well driving in England. I'm in the fast lane doing 75-80, and there's a Ford Transit ahead of me doing 65.......in the fast lane of a 4-lane highway. So I move one lane to the right, pass him, then move back into the fast lane to pass other cars that actually know where they belong.
I'm convinced there is a significant ego factor in people's lane choice. I.e. The fast lane is the "cool" lane, so I'm going to drive in the fast lane even if my chosen speed is totally inappropriate for the fast lane.