New York restaurateur Daniel Holzman knows firsthand the drawing power of Roy Choi, the Los Angeles-based chef-turned-gourmet-food-truck operator. Holzman remembers standing with Choi in a Los Angeles parking lot several years ago "in some s-‍-‍-‍-‍- neighborhood on Skid Row, in a place I normally wouldn't have stopped for gas because I'd be nervous.