FORTUNE's annual ranking of America's leading businesswomen


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27. Mary Barra
Mary Barra
SVP, Global product development
GM
2011 rank: New
Age: 50
The highest-ranking woman in the global auto industry, Barra oversees a $15 billion engineering budget and 36,000 employees. In 2012 she's been spending one week a month in Germany, working to turn around Opel. Her star is on the rise: CEO Dan Akerson has identified Barra as a candidate to succeed him.
From the October 8, 2012 issue
How we pick the Power 50
The list is compiled by FORTUNE editors, who consider four criteria: the size and importance of the woman's business in the global economy, the health and direction of the business, the arc of the woman's career (resume and runway ahead), and societal and cultural influence.