I'm looking for listing of the top 10 or 20 most popular used vehicles
within the U.S. South East Region. If possible, but not mandatory, I
would like to narrow the region to the Atlanta metro area.

Here is my definition of most popular vehicles:
The listing needs to be specific by year, make & model.  Most popular is
defined as those cars that represent the highest percentage of sales for
a given time period spanning at least 3 months and beginning no later
than January of 2004.  These numbers should be sales figures and not numbers
derived by the number of 'for sale' listings.  I will accept those sales
figures that are specific to auctions only - so figures that exclude
private party listings is perfectly ok.  However, if using auction
figures the sample size must be large enough to be representative of the
area - (i.e. don't uses the sales figures from one small auction site).

As an example, the type of results I would like to see should contain
the following list or information that can produce the following list:

Year  Make  Model         Percentage used car sales for Atlanta
------------------------------------------------------------------------
2002  Ford  F-150         3.6%
2001  Ford  Expedition    3.2%

OR

Year  Make  Model         Number Sold  Total cars sold in US South East
------------------------------------------------------------------------
2002  Ford  F-150         1,018         28,300
2001  Ford  Expedition      905        28,300