Canadian Pacific 60' Double-Door Auto Parts Boxcar #495993Details: Atlas 20005690 60' ACF Auto Parts DD Boxcar WM Western Maryland #495993 HO Scale. Picture may show a different road number. Built by American Car & Foundry in the late 1960s and early 1970s, the 60 Auto Parts Box Cars serviced assembly plants and component suppliers across the nation. The cars were equipped with either single or double doors, offering easy access to the freight inside, serving the auto industry well with their versatility.