These "Left Lane Bandits" in the U.S. drive me insane, clogging up the outer/fast lanes barely going 65-70 in 65 zones, when the "normal flow of traffic is 75-80 (nobody goes the speed limit, nobody!). So what you end up having are miles long backups behind one idiot who can't get their car out of the "fast" lane despite not passing anybody, and then people get frustrated and pass in the middle and inner slower lanes. Then you have a dangerous mix of people going 75-80+ mixed in with slower traffic in those lanes doing a legitimate 65 mph. It's not a safe situation at all to have huge speed differences.
Most states in the U.S. do have "move over" type laws, but I've never seen nor heard of them enforced. They don't care. I-95 in particular (biggest interstate along the east coast of the U.S.) is terrible for this. It's just a mad house the whole time. And inevitably somebody misjudges something somewhere and there's a wreck, and then the whole interstate closes!!! If people would just move da F outta the fast lanes, traffic in general would flow much more smoothly, and you'd probably cut down on a significant number of these wreck!
Anything longer than a few hours, and we just hop on a plane, or travel at completely off hours to avoid issues. So sick and tired of 4-5 hour trips turning into 8+ hours because people are stupid.