The CZ motorcycles from the 1970's...from what is now the Czech Republic...were bulletproof, although a little finicky...I think they are totally collectible. The 250 was even more rare than the 400. They were related to the JAWA bikes, and very raw in power and style. It's a bike that I would like to show off by having it in my living room (ok, honey, my mancave garage maybe) but not necessary to ride. They are loud and somewhat beastly. Only the tough guys road the CZ.