A link to a local news story here in Los Angeles. In this instance they recovered new luxury cars, but it seems to also fit the mold when classics and collector cars get stolen and disappear to the high seas (allegedly ;)). There was a rash of collector cars stolen here in the recent past. I guess we know their disposition...
http://abclocal.go.com/kabc/story?section=news/local/los_angeles&id=8606806