I have to say I don't get the US aversion to using the whole road. The key is to be able to see at all times and often using the whole road, in appropriate circumstances, is the best way to do that. On the Tail, there is a small matter of double yellows, that crimps that - at least in a legal sense. I saw few drivers positioning and the ability to read the road ahead seemed very limited. Maybe I was lucky, when I trained for my advanced driving exam, I had two police class 1 driving instructors in the car with me and I grew up where (Lancashire) certain things were ordained: lights are always on the outside of a bend; the solid line always breaks at the apex of the bed, etc., etc. I still use that stuff 50 years later, though not all pertain in the USA!!!
I did get my comeuppance one day many years ago: as teenagers we used to drive out on country lanes (often to pubs) and I had a van. One was high enough up to see across the tops of the drystone walls that lined the roads, and hence used all the road - one had a clear view of anything coming a long way off. Unitil One day in the middle of the road I met a Lotus Europa coming the other way. The saving in laxatives around that time was significant.
Ditto with overtaking on standard (not two lanes in the same direction) roads here. It's an aversion that is completely mystifying - especially in "perfect" conditions, for example I have passed a long line on Highway 54 which was straight as far as the eye could see. But no, we must sit in a nose to tail gaggle. And I'm not talking about reckless actions here, just standard overtaking. Passengers look as though one has committed the ultimate death defying act.
Odd!
Cheers