Then you need to lift off the accellerator, don't brake check or anything, just slowly slow down.

If the car behind you won't give you enough safety margin to maintain a high speed, then your only option to maintain safety is to reduce your speed so that the safety margin they give you is enough to stop in time for an accident.

Here in Sweden we have plenty of roundabouts, I will use those to also get rid of annoying drivers who just can't manage their distance, if I have someone like that behind me when I get to a roundabout, I just drive a full lap of the roundabout and let them pass.

I will allways let these guys past when I can, they are in a rush to their own accident, and I am not, let them pass and and make them stop being my problem, if I can't find a place to let them pass I will reduce my speed to compensate for their lack of safety margins

Or you're in the right hand lane and people are still tailgating you even though you're going 70mph.

Some people are unnecessarily aggressive on the road. Probably because they have unresolved emotional issues and take it out on other drivers. At least that's what I tell myself.

Its always a huge pickup truck too. I look in the mirror and just see the front grill

Try putting on your right blinker, sometimes they get the message you're encouraging them to pass.