WWII Impact on German Auto Industry

This is a book about one mans survival during the Holocaust. I had the chance to interview the man they called Iron-Mike.  He noticed I was driving an Audi and he asked me did I know the history of the car your driving.  I thought he meant Carfax, but he was talking about the terrifying time he worked in their factories as a slave during the Holocaust.  He started off telling me how BMW, Benz, VW,...