That giant sucking sound you hear will be the mass exodus of automobile related companies from Michigan truckin’ on down I-69 and just over the border.
Once upon a time Indiana had a significant portion of the auto industry. That was part of why that track got built in Indianapolis.
I’d have to look ‘em up to find all of the companies that did business there, but I do recall off the top of my head that Studebaker was based in South Bend.