You make a good argument, shoes. The mention of GMs and Chevy. The use of a distinctive phrase--"race to the bottom"--used by both DainBramaged and coldmountain. Show even more examples of commonality in writing in their respective posts, and that will bolster your case.
However, the biographical data of coldmountain, pre-remote (when there would have been no motive to falsify such data)--how does that fit DB? Did DB ever live in the South for 30 years?