I'm a fast driver, and one thing I will never understand are those who will do anything and everything to box in a fast driver, or to prevent them from cutting into a lane and taking off. I see fast drivers as excited molecules, looking to escape. What often happens when a fast driver is being blocked is they'll switch lanes back and forth, looking for their escape, creating this wave of hesitation, causing this big low speed anchor to form.
Someone driving fast won't suddenly stop the speeding after being blocked. Just let them go!
I am a fast driver, but in traffic I switch to wave abatement. It seems only logical to help the system when there is no way to personally benefit. (Except that moving to the right-most non-merging lane will help you avoid waves and move faster.) My prioritized rules of the road are:
1) go whatever speed you like
2) empty lane to your right? move right
3) no car in front of you and a car behind you? move right as soon as possible
4) slower car in front? move left if you can
These simple rules cover most situations in a way that benefits everyone involved. They do not cover some minority cases: aggressive tailgaters and high relative lane speeds (I leave a buffer lane if > 10 mph and no cars behind me).
Someone driving fast won't suddenly stop the speeding after being blocked. Just let them go!