An interesting take. A few years ago, the Top Gear (UK) programme carried out an experiment driving from Birmingham to Exeter (160m approx, almost all motorway driving. One driver was tasked with swapping lanes whenever an apparent advantage offered itself and another to stick to the speed limit, mostly in the middle lane and did not lane hop. The difference over 160 miles? 5 minutes slower for steady eddie. Plus, I suspect, a fair difference in fuel saved