Germany, France and the UK are very very similar compared to the US, North Africa, and the further reaches of the Union (e.g. Bulgaria). Asia might as well be on a different planet.
The degree of deference to authority, the specifics of the rules of the road, the level of interference of governance - these things vary, but they're within a spectrum. Things go off the wall different outside Europe.
Have you actually travelled in Europe? Germany is radically different from France; both are radically different from the UK, and let's not even start to talk about Eastern Europe.