On his last day on the job, will Alan Mulally go down in history as Ford Motor's greatest CEO ever?
Possibly, although surpassing founder Henry Ford, one of the greatest innovators in American industrial history, makes the title nearly impossible for anyone else to ever achieve.
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Still, having taken the helm in 2006, it's easy to argue that Mulally has accomplished far more than any other automotive CEO in recent history. He'll surely be a tough act for the next CEO, Chief Operating Officer Mark Fields, to follow.