The government on every level looks the other way. The lack of planning & funding concerning mass transit is one of the biggest travesties of American life. GM just announced the closure of a plant in Wisco, one of four nationwide, see here. A bit of history:
For example, in the 1930s and 1940s General Motors, Standard Oil, Firestone, Goodyear and other automobile manufacturers bought out and dismantled the electric trolley system in Los Angeles and 75 other cities in order to create demand for their products.
It's called The Great American Streetcar Scandal. How'd that work out for LA?