Having formerly operated on the West Side line in New York City, these third-rail R2 box-cab motors were sent to Detroit to supplant the smaller R1 steeple-cab units in Detroit-Windsor tunnel service. They were a 1930 product of Alco-General Electric with 44-inch wheels. Each unit developed 66,000 pounds of tractive effort and weighed 266,400 pounds. In this view of Nos. 304-305 (originally numbered 1204-1205), probably taken in September 1953, we get a good view of the trackage at Detroit's old Michigan Central Station. The Detroit River Tunnel ventilation was completed in December 1953, allowing diesels to run through, and most of the R2 motors, including these two, were returned to New York City. (One of the Detroit group was sold to the Chicago, South Shore & South Bend either for parts or for conversion to overhead-wire operation.) What appears to be a Baltimore & Ohio Pacific (4-6-2) waits in the background.