The American government recruited some of the German scientists after the war to go to Canada and continue their work. Dr. Metha was one of these men. He work on a secret aircraft project at AVROW Aeronautics in Canada. These were saucer type flying machines. The US had as many as 35 saucer projects with vertical lift off and descent. The most highly classified was known by code name "Silverbug". These saucers were designed to 2300 miles per hour at an altitude of 80,000 feet. Though designed in 1955 the papers describing these design were not declassified until 1995. For over 40 year America's #1 top flying saucer project was top secret.

There is testimony on the record that they also finished doing modifications required to allow the craft to transition to forward flight (after which it was expected to be capable of 300 mph). This is the date the US money disappeared and the project was terminated with all drawings, tooling, and flying examples taken to the USA. The examples at Wright Patterson and in the Smithsonian are NOT the final Avrocar version but early development models that were far from successful.