First off, you need to start paying attention to your driving and not to what others are doing. Your frustration comes from things not working out the way you want them to. You can't stop people from wanting to drive fast, second if you are paying attention to them, you are not driving correctly because you are affected by something other than what you should be thinking and doing. Haven't you noticed that nobody has ever caused an accident with you for following you(if they have I bet the reason is because you were focused on them driving and not your own driving). This is significant, you are worried about things that shouldn't be an issue. Most drivers don't worry about things like this because they are comfortable with driving and know how to correctly do it without second guessing. Nobody has a purpose of running you off the road. You have your own control of your own vehicle, nobody can change that unless they hit you and cause you to move. It is as simple as that.