Union Pacific's Tucson, AZ, to Canal Street (Chicago), IL, Z-train leaves Mendota behind as they speed back up to track speed. The train is passing thru Electrics on the east end of Mendota at MP 83. This train uses trackage rights over the BNSF between Kansas City, MO and Chicago, IL, which includes the Marceline, Chillicothe, and Mendota Subs on the BNSF to travel from KC to Chicago.