To pull a Bill Clinton... define mass produced ;^ ). I don't want to derail the discussion, but I think that there are a couple of posts from Hemmings that make interesting reading on this subject. So, I'll just insert the links and let you folks look over the articles.
http://blog.hemmings.com/index.php/2...november-1951/
http://blog.hemmings.com/index.php/2...ts-car-part-1/