I was glad to hear Elon setting a goal for the first Mars colony to be self-sustaining without the need for resupply ships from the earth. IMO another goal should be an ability to return viable couples to the homeworld for re-population purposes.
I watched the starship burner test in Bocha Chica in the wee hours this morning. Appeared to be successful.
It was interesting to hear him say, finally, that Mars colony's self-sustaining capability won't be during his own lifetime.