Elon Musk fears humans may 'self-extinguish' before he can colonise Mars Tesla CEO and SpaceX boss Elon Musk plans to set up a self-sustaining civilisation on Mars, but admitted his plans could be ruined by a supervolcano, comet strike or giant war too Updated The video will auto-play soon8Cancel Play now The Daily Star's FREE newsletter is spectacular! Sign up today for the best stories straight to your inboxInvalid EmailSomething went wrong, please try again later. Sign up today! When you subscribe we will use the information you provide to send you these newsletters. Your information will be used in accordance with ourPrivacy Notice.