The Aerotrain was a streamlined trainset that the General Motors (GM) Electro-Motive Division (EMD) introduced in 1955. GM originally designated the light-weight consist as Train-Y before the company adopted the Aerotrain marketing name.
An Aerotrain operating in suburban service in April 1965 as Chicago, Rock Island and Pacific Railroad No. 2 at Chicago's Englewood station.
The New York Central Railroad's Aerotrain at the Buffalo Central Terminal in 1956.
An EMD LWT12 locomotive pulling the Rock Island line's Jet Rocket.
The Rock Island line's repainted Aerotrain No. 2 on display in the National Railroad Museum in Green Bay, Wisconsin (September 2010).
The EMD LWT12 was a diesel–electric power car that was built in 1955 by General Motors Electro-Motive Division (EMD), to pull a lightweight passenger trainset. The General Motors Company developed both components under the project name, Train Y, but later marketed them as the Aerotrain. Diesel power was provided by an EMD 567C 12-cylinder engine, which produced 1,200 hp (890 kW). Two other GM Diesel engines provided current for train-heating, lighting and air-conditioning.
A preserved EMD LWT12 at the National Museum of Transportation in St. Louis, Missouri