Saw one of those idiots the other day- left lane doing 50 with a bumper sticker- “Get off my ass, I’m saving gas”. Fine, want to be a jackass and go under the speed limit- do it in the right lane.
I usually drive 60 on the freeway. Boosted mileage from 30 to 37 mpg.
But I always drive in the right lane. Except when passing, which I need to do surprisngly often.