Not much challenge on expressways, aside from you're limited to speed limits, its just a straight line. All you have to maneuver are those lane hoggers on the innerlanes, you will all meet at the end of the road which is the tollgate in no less than a minute interval.

Roads without speed limits sharing the roads with motorcycles, tricycles, pedestrians, and stray dogs cats even snakes are the real public roads. You have to maneuver all of them, and when the road is clear you will still encounter a procession of slowmo vehicles trailing an isuzu trailer truck