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GM President Ammann to become head of autonomous-car business

General Motors Co. has assigned its president and de facto global strategist, Dan Ammann, to run its autonomous-vehicle business, underscoring GM's pivot to advanced technologies even as it faces political push back on its plan to close factories making more-conventional vehicles. 

Trump suggests he's looking into tariffs on car imports

President Donald Trump tested the limits of his presidential authority and political muscle as he threatened to cut off all federal subsidies to General Motors because of its planned massive cutbacks in the U.S. Trump unloaded on Twitter on Tuesday, a day after GM announced it would shutter five plants and slash 14,000 jobs in North America.