The Costco Auto Buying Program allows members to save money on new and used car purchases through their network of approved dealers. Costco touts that they sell 400,000+ cars through this program, which would rank them second in the nation behind publicly traded, AutoNation, for most vehicles sold. So, is Costco a good place to buy a car? Can you get a better deal through Costco? And how does it rank against other buying programs? Tune in to find out.