Great report. The quality of the German Wohnwagens (trailers/caravans) is something to behold. Its as is the folks who design them are real users.
If I recall correctly, the maximum legal width is something like 2.3 meters, about 8 inches narrower than a Bambi. Drat.
And there's nothing quite like the French campgrounds, where one of the seemingly mandatory registrations questions is: "Croissants or Baguettes in the morning?" If you answer "Croissants," the follow-on question is, "Regular or Chocolate?" Vive la France!