if more US citizens would travel their view on how much they're getting ripped off would change drastically.
For many Americans, especially the richer ones that can afford a trip to northern Europe, it would be a case of cognitive dissonance: "gosh everything is so nice here / here is not America / America is the best / I can drive my SUV in America / these Europeans are crammed into tiny cars / thank god I'm an American!" or whatever the chain of reasoning is that gets you back to "thank god I'm an American!" from the world-crushing "gosh everything is so nice here".
For many Americans, especially the richer ones that can afford a trip to northern Europe, it would be a case of cognitive dissonance: "gosh everything is so nice here / here is not America / America is the best / I can drive my SUV in America / these Europeans are crammed into tiny cars / thank god I'm an American!" or whatever the chain of reasoning is that gets you back to "thank god I'm an American!" from the world-crushing "gosh everything is so nice here".