Why GM had a great quarter

It’s been nearly a year since the United Auto Workers ended its strike against General Motors, and the automaker has defied expectations with strong third-quarter earnings. Why is GM doing so well when other carmakers are struggling? Plus: Quebec is using a pension fund to build a light-rail system, and “Marketplace” host Kai Ryssdal plays U.S. president in a climate war game with two Department of Defense retirees.