The 2019 Ram 1500 Rebel pickup truck is displayed at the North American International Auto Show in Detroit, January 15, 2018.DETROIT – Automaker Stellantis plans to indefinitely lay off up to 2,450 U.S. factory workers later this year as it discontinues production of an older version of its Ram 1500 pickup truck in Michigan.The truck, which is produced alongside the Jeep Wagoneer and Grand Wagoneer, has been largely used as a low-cost pickup to sell to entry-level buyers and fleet customers since the automa ...