I was in Kiel for my uncle's funeral, and on the way home I saw a lot of tourists and interesting things:
Two or three trucks with Turkish plates!
Two vehicles with Belarusian plates: a Laguna Grandtour and a truck I can't remember, had "Brest" and the city arms on the side of the roof.
A truck from Estonia, only the second Estonian-registered vehicle I've met in person.
US-spec Passat 3BG wagon with Polish plates
A truck full of US-spec cars, including an Audi A4 B8 or B9, 2005+ Ford Mustang and a 2002-04 Honda Odyssey.

And the most interesting bit...you're not going to believe this, but...