Following a change of allegiance by General Motors, environmental groups are calling out the remaining automakers that still oppose California’s ability to set its own, stricter, emissions standards. On Wednesday, leaders of the Sierra Club, Environmental Defense Fund, National Resources Defense Council, and Union of Concerned Scientists issued a…Following a change of allegiance by General Motors, environmental groups are calling out the remaining automakers that still oppose California’s ability to set its own, stricter, emissions standards. On Wednesday, leaders of the Sierra Club, Environmental Defense Fund, National Resources Defense Council, and Union of Concerned Scientists issued a…Following a change of allegiance by General Motors, environmental groups are calling out the remaining automakers that still oppose California’s ability to set its own, stricter, emissions standards. On Wednesday, leaders of the Sierra Club, Environmental Defense Fund, National Resources Defense Council, and Union of Concerned Scientists issued a…Following a change of allegiance by General Motors, environmental groups are calling out the remaining automakers that still oppose California’s ability to set its own, stricter, emissions standards. On Wednesday, leaders of the Sierra Club, Environmental Defense Fund, National Resources Defense Council, and Union of Concerned Scientists issued a…