Illinois passed a similar law a few years ago.... Something like the 2 mile rule, without passing. In Illinois, State Troopers are the worst offenders of the law. You will NEVER see an Illinois State Trooper in the right lane...ever!
Just moved back from Germany, where it's illegal to pass on the right. Left lane cruisers are minimized, but not totally eliminated... but, most folks in the left lanes are traveling in excess of 90mph.
I made it 2 months, in the US, before I got my first speeding ticket...
I sure do miss the autobahn....