Nissan North America's Infiniti brand launches its first full-size SUV, the QX56, April 1 on national cable TV networks. Omnicom Group's TBWA Chiat/Day, Playa del Rey, Calif., created a trio of :30s likening the SUV's well-appointed interior to the comforts of home. Creative director: Tor Myhren. Copywriter: Craig Crawford. Art director: Andy Nordfors.