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Subject: Avrocar
Content: The Avrocar, a project kept secret by the government for some time until it was finally  leaked to the public. I believe the project had started out in Canada but they had no  progress with it so the plans were sold to America. The american government worked on it for ages but all they could do was get this thing to hover a few feet off the ground.  What it was actually meant to do was make transcontinental flights and be used for  military purposes. However, the project failed and both prototypes of the avrocar were  sent to different locations. One is in the National Space and Aeronautics Museum I  believe and I am not sure of where the other one is.