In truth, underneath the glam and glitter in showcasing its latest
railroad invention, GM had a good idea with the train.
As it stated in its marketing pieces the industry was losing some $700
million annually on passenger trains by the 1950s, which nearly equaled
what they were earning in
freight revenue. Despite these losses railroads were required by
federal law to continue providing such services even though highways,
automobiles, and airlines were all subsidized on some level. The Aerotrain
was powered by EMD's (GM's Electro-Motive Division which manufactured
locomotives) LWT12 model diesel locomotive. It utilized the company's
tried and proven model 567C 12-cylinder prime mover
that could produce 1,200 horsepower (essentially based from a SW1200
switcher). The unit featured a turret-like, raised cab and whose
overall design resembled recent cars available for sale at the time.
The completed train sported a 10-car consist and ironically, was modeled against the very competition trying to put passenger trains out of business, the intercity bus. The cars were only 40 feet long, half the length of standard designs, thereby reducing the weight by 50%. To also reduce weight the locomotive and cars were all built from aluminum and GM returned to a concept first used at the start of the streamliner era, semi-permanently coupled trainsets. In this case all of the cars and locomotive shared a truck, which further helped to trim weight. To save space GM looked to the bus design and used the area beneath the cars to store luggage and other passenger items (this also resulted in no longer needing a dedicated baggage car). With its air-suspension and high speeds travelers were meant to be "wowed" while General Motors touted to railroads that operational costs would be reduced from $2,500 per seat to just $1,000.
As a final advantage for railroads, GM designed the trainset to have new equipment simply replace worn out cars due to their low cost, instead of trying to preform repairs. Soon after the Pennsy Aerotrain hit the rails between New York City and Pittsburgh, Pennsylvania the New York Central launched the second trainset, #2, between Cleveland and Chicago. Despite General Motors' hope and claim that its futuristic train would "save an industry" this simply never happened. As it turned out the Aerotrain was far too light resulting in a rough ride for passengers. There was also the issue with the locomotive, which was underpowered and had difficulty accelerating to reach its intended fast cruising speeds of near 100 mph. For railroads they soon discovered the locomotive was also hard to maintain and somewhat difficult to keep running. For more reading about the trainset please click here.
The train went on to test with two other railroads including the Santa Fe (as its San Diegan) and the Union Pacific, which put it to work briefly on its City of Las Vegas.
During these demonstrator runs the trainsets logged more than 600,000
miles although ultimately, no companies were ever interested in
purchasing sets and both the PRR and NYC had returned theirs to GM by
1957. Interestingly, the Rock Island saw use for both in commuter
service purchasing them soon after they were returned to General Motors.
Thus, they became perhaps the most eye-catching and interesting
commuter trains ever operated, faithfully operating around Chicago for
another decade until even the Rock had had enough and officially retired
the sets in 1966. Parts of both sets were preserve, however. Today,
NYC's Aerotrain #2's locomotive resides at the National Railroad Museum in
Green Bay, Wisconsin while the Museum Of Transportation in St. Louis
keeps PRR's #1, which includes the locomotive (non-powered) and a few cars.
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