>Here in France all train cars are "quiet cars" and most people respect that.

I wish it were true... I took the train last week and was in the same wagon as 4 "rednecks" who ate their lunch while drinking wine, chewing loudly and laughing. The whole wagon could hear what they were talking about. The SNCF employees didn't even care... I am a regular train user and it is unfortunately pretty frequent occurrence.