The robots are 'born' via 3D printer, and recycle themselves upon their 'death'.
The race may be on to send humans to live on Mars, but is it worth the effort -- and the spend -- when we have our own problems to deal with on Earth.
Musk dismisses one of the main technical challenges of being on the Martian surface: the temperature.
Interplanetary colonisation was once the stuff of science fiction but now there are plans to colonise Mars. How have film-makers and writers dealt with our rapacious Anthropocene age?