But if he sees you in that position 2 miles back, he's used to the idea that you're there by the time he gets there. And, if it's safe to pass, you can move 6 inches or a foot away from center and look like you're cooperating, but the driver still has to change lanes to go around you, while in the meantime, you still have a safety zone to make even more room for yourself if you feel the car is too close.