First off, this is NOT a car blog, but if you bear with me, this gets filed as a tech/aviation tag. Trust me.
I grew up in a town owned by GM. Delco Electronics, at the time a wholly owned subsidiary of General Motors, was responsible for the largest percentage of the economy of the county. There was also a Chrysler plant in town, and combined with the GM money, the two of them were easily the source of 80% of every dollar spent within 50 miles of city center. There was a Ford plant to the south, but they weren’t anywhere near as big a deal as the GM/Chrysler plants.