Road to Power is the story of how Mary Barra drove herself to the pinnacle of a company that steers the nation's wealth. Beginning as a rare female electrical engineer and daughter of a General Motors die maker, Barra spent more than thirty years building her career before becoming the first woman to ever lead a global automaker. With $155 billion in sales and 200,000 employees, GM is widely considered to be a proxy for the U.S. economy, making Barra's position arguably the most important corporate role a woman has ever...