According to the other comments (and SpaceX[1]), SpaceX has a contract with the government to deliver cargo to the ISS when the shuttle retires. It has plenty t

According to the other comments (and SpaceX[1]), SpaceX has a contract with the government to deliver cargo to the ISS when the shuttle retires. It has plenty to do with politics. [1] http://www.spacex.com/dragon.php http://www.spacex.com/dragon.php