The Cadillac story is more than the story of a car company. It is, in many ways, the story of the American automobile industry itself-- which, as much as any industry, drove America's growth in the twentieth century and defined who we are as a people: mobile and prosperous. Cadillac, again and again, played a critical role in that story, for both good and ill. In the depths of the Great Depression, the brand redefined itself and the luxury...