Dade Hayes Finance EditorEXCLUSIVE: In a throwback to the sponsor segments of television’s earliest days, Late Night With Seth Meyers bandleader Fred Armisen will star in a Cadillac-branded segment during Thursday night’s show.Meyers will toss to the segment featuring Armisen in the role of an agent in Cadillac’s “digital showroom,” touting the features of the 2021 Escalade.