Some question the quality of Musk’s spacecraft. The company’s launch vehicles simply do not measure up to the specs that are required. As of May 2011, not a single one of Musk’s vessels were “man rated,” meaning that he cannot legally put human passengers on them. While this won’t prevent Dragon from carrying cargo to the ISS, it does present a substantial hurdle that Musk and co will have to overcome if they wish to become viable players in the private commercial space race. SpaceX also has a spotty track record of launches at best, failing to launch Falcon 1 until five years after promised. The company tends to deliver, but does so often many years after promised. Musk struck back by saying that “in the space business, that’s on time.”"
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