Evans streamliner dual purpose rail road and street car, 1935, found on Shorpy.com

The "auto railer" consists of front and rear steel pilot railroad wheels attached to a conventional type of bus or truck. The pilot wheels are raised for operation over highways but can be let down when the vehicle reaches the tracks. The vehicle runs on its own tires over the rails with the pilot wheels guiding it along the track.

Found on http://www.shorpy.com/node/17521

Evans Products was founded by John Steptoe Evans, whose grandson John D. Evans was a co-founder of C-Span.

Evans Products started out building wood products; first, a wooden block that allowed easy loading of autos on railcars, then cedar separators for the plates in a car battery. John S. Evans set a record in 1928 by flying around the world in 28 days.