Auto Loan Rates Nationwide

David Thomas created a user-favorite with this viz of auto loan rates nationwide, garnering 24 comments when it was re-embedded on Autoblog.com. Readers discussed the reason for the enormous spreads and agreed that lower rates are only found in cities with high income and a relatively robust exit from the downturn.

About this Viz

The one exception seems to be Detroit. Despite a horrific economy and foreclosures through the roof, auto loan rates are relatively favorable. Any ideas as to why?