AAH #246 - Everything Camaro: From A to Z/28

UP FOR DISCUSSION:- After driving BMW's M3 and M4, we ask: how will sports cars evolve?- Thoughts on the Cadillac ELR's failure to perform.- By 2025, survey says, 75 percent of North American pickups will be aluminum.SPECIAL GUEST: Mark Stielow, Program Engineer Manager, Chevrolet Camaro Z/28- How and why his team developed a $70,000 CamaroAll that and more with John McElroy, Autoline.tv; Gary Vasilash, Automotive Design and Production; Michelle Krebs, AutoTrader Group.