(not mine)
I've seen 4-stroke Messerschmitts before but I don't believe I've ever seen a 2-stroke powered one.
1954 Mi-Val Mivalino
https://bringatrailer.com/listing/1954-mival-mivalino/
"a Messerschmitt KR175-based microcar that is powered by a 172cc Mi-Val two-stroke single"
Sold for $60,000 on 8/31/23
In the comments: "I have a Mi-Val Mivalino that I dropped an LS3 in."
Although, if no available engine to get one running, a water cooled 250 or 500 2-stroke single might be fun.