A Ford Motor assembly employee works on a 2013 Ford C-MAX Hybrid vehicle at the Michigan Assembly Plant in Wayne, Mich., on Nov. 8, 2012. Rebecca Cook/Reuters /Landov hide caption

toggle caption Rebecca Cook/Reuters /Landov

General Motors executive Mary Barra, seen here in January, will become the automaker's first female CEO. She will replace Dan Akerson, 65, who is retiring. Carlos Osorio/AP hide caption

toggle caption Carlos Osorio/AP

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