I wonder what the difference is compared to subway trains. Similar local lobbying vs national auto lobbying dynamics, and subways didn't suffer the same extinct

I wonder what the difference is compared to subway trains. Similar local lobbying vs national auto lobbying dynamics, and subways didn't suffer the same extinction. Is it just switching costs being lower for streetcars? Or maybe the fact subways are underground means they don't battle in a zero sum pavement game with cars, so they were more immune to tides of public opinion and city administration?