That's why I said "with a few exceptions". There are legal Defenders in the USA, but they are uncommon enough that I didn't want people thinking of Discoveries or LR2/3/4's when I described a "tractor-like" vehicle. Next time I'll be more specific.

P.S. That's a neat site! I'm glad that there's an American Defender community. Defenders are beautiful vehicles, and on the rare occasions that I see one I always try to get a picture with it :-)