> And going from orbital flight to ready to land on mars is a pretty simple roadmap Not really, unless you mean "crash" landing. The 4 year estimate is overly

> And going from orbital flight to ready to land on mars is a pretty simple roadmap Not really, unless you mean "crash" landing. The 4 year estimate is overly optimistic as a result. Forget launch windows, just handling refueling and long term loitering (with engine restart after that) required for Mars mission with any reasonable chance of success will take majority of those 4 years. Especially if you are not willing to blow starships all the time. And that's also ignoring the tiny detail that Mars is not even in top3 priorities for starship even after successful fully orbital test and landing of both stages. Getting to high flight rate / launching Starlink v2 sats / HLS is much more important for SpaceX