Not important but just a small error that always bugs me - i.e. equates to "that is to say", so it shouldn't be used to replace e.g. meaning "for example" - unless that transit story is the entirity of the cultural differences you talk of.
It seems to be a common mistake that non-native speakers make. For instance, I myself have just recently learned (thank you HN!) the difference between i.e. and e.g. (somehow I always thought that i.e. == for example), and since then corrected some friends in that matter.
I've lost my edit overnight so I guess it stays, but I apologize for the error, I never really understood the difference between the two until now. Thanks, I will try to remember this for the future.
Sorry, slightly OCDish about this.