General Motors has gone from market leader to also-ran in the world’s largest car market, stymied by its own missteps and Chinese policies that favored its local rivals. General Motors, China, SAIC Motor Corporation Ltd, Automobiles, Electric and Hybrid Vehicles, Factories and Manufacturing General Motors has gone from market leader to also-ran in the world’s largest car market, stymied by its own missteps and Chinese policies that favored its local rivals. NYT > Business