Dhivya Suryadevara will become GM's new CFO, joining CEO Mary Barra. No other major automaker has two women in such top executive roles. GM has completely reversed the largely male-centric culture that defined the company before its 2009 bankruptcy. Let's be clear: there are many, many women working and thriving in the global auto industry. Quite a few are also on leadership positions, with titanic responsibilities. But as a whole, the business has long been thought of as a bastion of "car guys."