(http://media.il.edmunds-media.com/cadillac/ats/2013/ns/2013_cadillac_ats_prf_ns_91211_196.jpg) Mark Reuss, president of General Motors' North American operations, takes a prototype 2013 Cadillac ATS for a test-drive and talks up the brand's new 3 Series fighter in a teaser video.
InsideLine