That depends on what scale you're asking about. Lionel produced one in 3-rail O scale just a few months after the introduction of the original M10000.
Contrary to what a lot of people believe, the original M10000 was not diesel powered -- it had a distillate engine that ran on a fuel similar to kerosene.
The Union Pacific never switched to a diesel engine until after the Burlington Zephyr's historic run from Denver to Chicago because General Motors hadn't completed development of their diesel engine when the M10000 was built.
It's too bad that model companies have never produced an inexpensive model of the M10004 City of San Francisco streamliner of the 1930s. This diesel train, along with the M10005 and M10006, were considered at thetime the best looking diesels built. Yet, only Keyline and Overland have produced these models and their rebuilds. Keyline was reported in 1986 to have produced the M10004 and 10005 in brass. Overland built the M10005 in 1992 and the rebuild CD7 in 1994. No company, to my knowledge has ever produced an inexpensive model of any of these trains. European model companies, such as t he old Lima company, Liliput, and Roco, have produced inexpensive models of European streamliners. If it can be done for European streamliners, it can be done for American streamliners. Yet year after year we see the same the same tired gray line of F3s, F7s and SD7s etc. While it is very understandable that modeling companies try to produce models that were used on a wide range of railroads so as to sell the greatest number of model railroaders, this should not be an exclusive focus. The M10004 and M10005 did national tours across the country. While the M10004 was a long train, the whole train does not have to be reproduced. Only three inexpensive streamliner models have been made. The Varney GM Aero Train of the 1950s; a model of the Burlington Zepyher, sold by Historic Rail; and the Acela also sold by Historic Rail. These items quickely sold. Those model railroaders, that have a bent toward the the freelance area, may like models proposed by General Motors Eleecto Motive Division but never built, such as that shown in the kambach GM Scrapook, could be produced in HO plastic. This area of modeling has never been explored by model companies to my knowledge. I hope model companies will take a look in these areas. Ernesto
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