BestOnlineBid.com - In what area of the country is car buying most prevelant?

In what area of the country is car buying most prevelant?

I am doing research for a popular online auto auction.

Southern California is #1 in car sales and has the most dealerships in the world, probably.
Stop doing your research. Chicago is the #1 and most competitive market in the world. #3 biggest city and 1/10th the number of cabs needed than New York. It's no contest. We have the most dealers per cap per sq mile than anyone in the country. There are more dealers than Fast food restraunts and I am NOT kidding. I wish I were.