Earlier quoted context omitted.
I think the rule with Elon Musk is all his estimates are extremely optimistic and you need to multiply them by two or three to get closer to reality. But I'm sure it serves a purpose in giving his employees an aggressive target to aim at. Even if they miss it, at least they probably got there sooner.
No. Unrealistic schedules don't help getting anything done. I hope they have real plans for the real work, while the CEO throws out PR bombs.
Seems to have worked