I find that if I ride in the far right, drivers will ALWAYS pass more closely (not usually--ALWAYS). If I ride a bit further to the left, they swerve around me or often get into the next lane. I do have other drivers who pass very closely- sometimes 2 feet or less, and this scares the F%#@ing fecal matter out of me. I often find myself thinking 'the next cager that passes that close is going to pay for a new mirror'. But I try not to actually do that, as the cost of getting a cast on my hand is just as much as a new mirror, so there is no win/win situation.

Josh