见NASA 官网报道：

NASA Chooses American Companies to Transport U.S. Astronauts to International Space Station

https://www.nasa.gov/news-release/nasa-chooses-american-companies-to-transport-u-s-astronauts-to-international-space-station/

The companies selected to provide this transportation capability and the maximum potential value of their FAR-based firm fixed-price contracts are:
— The Boeing Company, Houston, $4.2 billion
— Space Exploration Technologies Corp., Hawthorne, California, $2.6 billion