How so? Just the psychological difference in seeing higher numbers? I find the highways in the USA are much better quality. My biggest fear is running across so

How so? Just the psychological difference in seeing higher numbers? I find the highways in the USA are much better quality. My biggest fear is running across some podunk town's overzealous law enforcement when everyone is doing 10+ miles over the limit in the USA and having Canadian plates. Or crazy road violence incident where they have a gun but I realize that isn't a rationale fear.