BRW Filmland Los Angeles director Robert Groenwold lights up the power of incredible thinking for GMC in the new :30 “Lights” out of Leo Burnett, Detroit. Groenwold brings his keen editorial eye and signature sleek aesthetics to launch GMC’s latest fleet of performance vehicles in a uniquely radiant style. The spot opens with a sweeping view of hanging lightbulbs beginning to illuminate, revealing the new GMC Sierra, Acadia and Terrain in a sophisticated black showroom, lit by the artfully dispersed bulbs.