bogies to reduce weight, making the train operate as one integrated unit rather than as a separable locomotive and cars. The integrated-body-and-frame construction using aluminum reduced the required structural weight to a fraction of that for conventional body-on-frame railcars, and the trainset's total weight of was about the same as a single passenger coach of the time. The power car featured an elevated "turret cab" behind a nose featuring a large vertically-divided air intake grille formed by parabolic arches. On the roof of the cab were a headlamp and a vertical marker light. The train was powered by a single spark-ignited distillate-burning engine built by the General Motors subsidiary Winton Engine Corporation driving a generator that powered two traction motors on the leading truck of the power car. The two passenger coaches each had a capacity of 60 people; the last coach also included a small galley at the rear end to prepare meals that were served at passengers' seats. Original livery consisted of Armour Yellow sides with a Leaf Brown nose, roof, rear, and lower panels, with red striping separating the two main colors. The nose was subsequently painted Armour Yellow consistent with other early Union Pacific streamliners. Service history The trainset was delivered on February 12, 1934, and was sent on a publicity tour across the US, during which about a million people toured it and its stops became local media sensations. During its exhibition tour across the US as The Streamliner, where it hit a top speed of 110 mph (177 km/h) during its journey, it visited Washington DC for inspection by Franklin Delano Roosevelt. The popular train was put on display at the 1934 World's Fair ("A Century of Progress") in Chicago from May 26 to October 31, 1934. It was somewhat overshadowed by the other lightweight streamliner, the diesel-powered Burlington Zephyr, which entered the fair after a record-setting "Dawn to Dusk Dash" speed run from Denver to Chicago, in time to arrive at the "Wings of a Century" transportation pageant. During its testing, demonstration, and display periods, the M-10000 trainset included the sleeper car Overland Trail, which was removed from the consist prior to revenue service and added to Union Pacific's next streamliner, M-10001. M-10000 was placed in revenue service between Kansas City, Missouri and Salina, Kansas as The Streamliner on January 31, 1935. It was subsequently named City of Salina as Union Pacific adopted