CN commuter tank engine By | June 4, 2023 Email Newsletter Get the newest photos, videos, stories, and more from Trains.com brands. Sign-up for email today! Get Updates Canadian National 4-6-4T No. 46 couples to a string of commuter coaches at Dorval, Que., in September 1955. The tank engine brought the cars out from Montreal and now will head back with a load of morning commuters. Philip R. Hastings photo