UP FOR DISCUSSION: - Viper plant shuts down for 15 weeks. Is Corvette the culprit? - First impressions after seat time in the 2015 Chrysler 200. - VW knows diesels, but where are the hybrids? - Chip Ganassi Racing wins Sebring. SPECIAL GUEST: Mose Nowland, Ford Racing Historian - An inside look at 55 years of building race engines for Ford. All that and more with John McElroy, Autoline.tv; Gary Vasilash, Automotive Design and Production; and Jim McCraw, Society of Automotive Historians.