1. Almost every car company in the world has design studios in Southern California.
2. Ford's luxury division is in Southern California.
3. I sold a house a couple of years ago, to an engineer leaving General Morors and Detroit, for a better job with Huyndai in guess where? Southern California.
4. New plants for US, Japanese and German makers are all over North America, except Detroit.
5. GM's latest rear wheel drive chassis are from their Australian subsidiary, Holden; not Detroit.
I have never been to Detroit, but these trends indicate an area in transition or decline. Time will tell, if transition is made.
Ironic, as at one time, folks left those states to move to Michigan to work in "Mr. Ford's Miracle" at River Rouge.