I only did the slow down and not let someone pass to one person. There is a guy I work with and when we drive to work he will get so close to your rear that you can't even see his head lights. So I got sick of this and slowed down to 35 in a 55. He pulled out to pass and I floored it ( he didn't stand a chance). After he pulled back in behind me I slowed down again and again he tried to pass but needless to say I didn't let him. He drives a little Saturn and thinks it is some kind of sports car.