The SOS, AG, and Governor have zero control over existing legislation. The settlement is them pushing as much as they can for Tesla against the confines of the law.
Write your legislators if you want the sales law changed.
You won't need to go to Chicago or Toledo. The settlement allows the gallery people to help with trade ins and facilitate paperwork. Only the legal paperwork transfer will occur out of state.
As I read it.
Tesla has a large and very nice "logistics center" in Farmington Hills, used by the guys who have been driving around the state picking up and dropping off cars to be serviced. It won't take much work to turn it into a fully functioning Service Center.