While the Union Pacific and Burlington were certainly pioneers in the streamliner movement, other railroads introduced their own versions of streamlined trains. Some, such as Boston & Maine’s/Maine Central’s Flying Yankee, were imitations of the Zephyrs.
Others, such as Illinois Central’s Green Diamond, were imitations of the M-10000 series.
It took the Santa Fe Railway, direct competitor to the Union Pacific on the Chicago-Los Angeles route, to present the real future of streamliners. On May 12, 1936–one day before the Union Pacific began its 39-3/4-hour City of Los Angeles service using the M-10002–the Santa Fe initiated its own 39-3/4-hour train called the Super Chief. The train wasn’t streamlined at all; instead, Santa Fe demonstrated that what made streamlined trains fast was the use of Diesels instead of steam locomotives that had to make frequent and time-consuming stops for water.