Hyundai Motor Co., South Korea's largest carmaker, will debut its all new Genesis premium sedan in the U.S. at the upcoming Detroit auto show, industry sources said Thursday. The planned unveiling of the sedan, which is the second iteration of Hyundai's upscale model, reflects the steady popularity of the first generation Genesis. The North American International Auto Show (NAIAS) in Detroit will kick off on Monday (local time) and run through Jan. 26 with 30 carmakers from around the world displaying 50 vehicles.