Great little write-up.
My excursion to Europe last week only managed to add 210 miles to my car, but the car was great!
Regarding your observations of driving styles, I must say that the standard of driving on the motorway between Calais and Belgium along the coast (past Dunkirk) was apalling!

The number of cars and HGVs straddling lanes and not leaving adequate clearance when pulling in/out was truly shocking. I felt very uneasy

. And when we were parked in in Belgium, we witnessed a car get broken into in broad daylight on a busy road
On the way home on the M20, I noticed how poor the road surface was for a long stretch, it is some evil concrete slab of a road. That aside, I found our roads on par with the ones I encountered.
I am also confused as to why the continental version do not have the ability to switch between mph and kph, I found that really usefull.
Thanks for sharing your experiences, I will look out for you!