I was just in the last Hudson dealership today. They were still in business up to a few years ago when he sold out his parts stock and turned it into a local auto museum.
http://www.ypsiautoheritage.org/
Lots of local history here - Tucker's house is about 2 blocks away and Willow Run 2-3 miles away - plus Hydramatic and 2 Ford plants (one just closed).
He has one of the original Hudson Hornet racecars that Doc was based on. It's coming back right now from the Daytona Beach get-together (on the beach).