TheTruthAboutCars.com's Alex L. Dykes takes the all-new, 2013 Cadillac ATS 3.6 AWD out for a drive. How does Caddy's new BMW 3-Series fighter compare? Watch and find out. We talk infotainment, drivetrain, seating, cargo and give the ATS our exclusive Trunk Comfort Index. Be sure to check out the full review at http://www.thetruthaboutcars.com