Boswell's Auto Service is a state-of-the-art auto repair shop, serving Waldorf, MD and the surrounding At Boswell's Auto Service we work with the industry’s most up to date equipment and the finest ASE Certified technicians available in Waldorf, MD. Boswell's Auto Service is a state-of-the-art auto repair shop, serving Waldorf, MD and the surrounding At Boswell's Auto Service we work with the industry’s most up to date equipment and the finest ASE Certified technicians available in Waldorf, MD.