Automobile boxcar By Brian Schmidt | September 30, 2021 Email Newsletter Get the newest photos, videos, stories, and more from Trains.com brands. Sign-up for email today! Get Updates Automobile boxcar Northern Pacific no. 4914 is a 50-foot, single-sheathed, double-door car built in the late 1930s and shown here in 1940. Note the Dreadnaught end door. Jay Williams collection