But it all comes back to Musk’s dream. Former NASA chief O’Keefe says Musk has his eccentricities, huge doses of self-confidence and persistence, and that last part is key: “You have the capacity to get through a setback and look ... toward where you’re trying to go.”

source https://gadgets.ndtv.com/science/news/first-commercial-space-taxi-a-pit-stop-on-musks-mars-quest-2233996