The McKeen Motor Car Company of Omaha, Nebraska, was a builder of internal combustion-engined railroad motor cars (railcars), constructing 152 between 1905 and 1917. Founded by William McKeen, the Union Pacific Railroad's Superintendent of Motive Power and Machinery, the company was essentially an offshoot of the Union Pacific and the first cars were constructed by the UP before McKeen leased shop space in the UP's Omaha Shops in Omaha, Nebraska. The UP had asked him to develop a way of running small passenger trains more economically and McKeen produced a design that was ahead of its time. Unfortunately, internal combustion engine technology was not and the McKeen cars never found a truly reliable powerplant.

Virginia and Truckee Railway Motor Car 22, also called McKeen Motor Car 70, is a gasoline-powered railcar at the Nevada State Railroad Museum in Carson City in the U.S. state of Nevada. It was built for the Virginia and Truckee Railroad in 1910 by the McKeen Motor Car Company. Motor Car 22 was operated by the Virginia and Truckee until 1945, when it was sold off and became a diner until 1955. It eventually became the office and storage space for a plumbing business before it was donated to the Nevada State Railroad Museum in 1995. After a thorough study, the Museum undertook a restoration of the McKeen car in 1997. The restored motor car was unveiled in 2010, a century after it was originally delivered to the Virginia and Truckee. Motor Car 22 was listed on the National Register of Historic Places in 2005, and designated a National Historic Landmark in 2012. It is one of a few surviving McKeen railcars, and the only one that is operational.