Board Thread:Questions and Answers/@comment-178.41.90.96-20160116121533/@comment-69.1.27.102-20170415220511

One thing that could be useful is the ability to send a cargo pod via Vasimir to Mars. The cargo pod could contain any of the bulk or gaseous items, or even be empty. A set of empty cargo pods would be little more than 1 metal, 1 dollar, and 1 second in construction time for ~10. At Mars they would be scrapped for 1 'return trip' each.

This way you can transport stuff to and from Mars much easier. If Mars needs oxygen, you send a VASIMIR with a cargo of oxygen. If Mars needs metal, you send a load of metal. If Mars needs to send garbage back you send an empty VASIMIR, and the Mars base gets a return trip token that they can use to send garbage back.