It seems it was part of a group puzzle a while ago, but not yet the subject of it's own puzzle. Annoyingly it only shows up in the solved section if you search for "Zündapp" (with umlaut), but not when you search for "Zundapp" (which is what I did originally). I apologise for my sloppyness with some of my recent puzzles, I always search to check if they are reposts but sometimes it just doesn't work out for me
I appreciate no one giving me any hassle for my mistakes!
Anyway, you just got yourself another point! If anyone knows what happened to this car i'd be interested to hear it, as I think it's very, very pretty indeed.