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He built Tesla Motors and SpaceX, for a start.

• jerf 12y ago
  And I'd further observe in context that SpaceX has already delivered to the Space Station, in rockets designed to carry humans that simply haven't been certified and trusted by experience yet, as opposed to rockets that are fundamentally incapable of carrying humans for some reason. It's essentially impossible to have any more credibility here without actually having delivered astronauts to the space station, which is nearly the only step remaining.