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While SpaceX spent its own money to develop its first launch vehicle, the Falcon 1, the development of the Falcon 9 was accelerated by the purchase of several demonstration flights by NASA. This started with seed money from the Commercial Orbital Transportation Services (COTS) program in 2006. SpaceX was selected from more than twenty companies that submitted COTS proposals. Without the NASA money, development would have taken longer, Musk said.