Someone should make a documentary about Penske’s rise from race car driver to billionaire. People usually think of Penske as owner of car dealerships and race car teams. Penske also purchased Detroit Diesel from General Motors for pennies on the dollar, made it profitable and then sold it for hundreds of millions more than he paid for it. And he did it without screwing his employees or using bankruptcy to do it. IMHO, Penske should have been the one to head up GM after bankruptcy.