I try to drive so I am as far away from other vehicles as possible. I also try to avoid ever inconveniencing other people. It doesn't matter if I'm going 140, if you come up behind me, I'm moving over to let you by - as quickly as I can while still being safe. I expect the same from others. Changing lanes isn't hard, I often move over to let someone by and then go back to continue passing.
Also, please stop passing on the right. You're just making everything worse.