On your first point, that's the norm in my driving (most of both US coasts.) I've sometimes wondered what the saturation level is where the left lane should jus

On your first point, that's the norm in my driving (most of both US coasts.) I've sometimes wondered what the saturation level is where the left lane should just be another lane to increase steady state flow rate. I guess it's when the lane becomes too crowded to cycle properly. On your second point, I've always just assumed that that was a tall car thing because I figured they probably get more uncomfortable cornering. The same way I probably seem irrational when I speed around pickup trucks: they probably fail to recognize that their driving in front of me is like putting a wall in my face (and unlike semi trucks the drivers are no better than the rest of the people on the road.) On your third point, the US has baked in too many policies that are prohibitive to sensible development patterns. The implicit subsidies for low density living and the federally insured mortgage cone to mind as two of the worst.