My (German) mother-in-law informs me that the German term for little trailers like my new 13'
Burro is
Knutschkugel.
This was originally used to describe the old BMW Isetta, but is now used for tiny vehicles generally. It means "cozy coach" or more crassly, "french-kissing sphere/wagon/bubble/pod." Meaning: if you're sharing that thing with somebody, we hope you know them pretty well!
Anyway, thought you all would like to know.