It wasn't until GM bought it up and dismantled it
Australia has the same problem - people like a low population density, something like four houses to the acre, which scarcely supports a municipal sewer system. let alone mass transit. Huge car parks around suburban train stations are about the only practical solution.
You need about 20 dwellings per acre to support decent infra-structure.
I'm grateful that I don't have to live in Phoenix, Arizona, despite the concentration of world-famous psycholinguists.