Three things:
1) Sleep is sacrosanct -- and when folks are up at 2-3am in the morning, its never good.
2) Say what you want about Elon, but in the history of technology, there are very few people who have had more than one or maybe two very successful startups. Elon has like more than a couple.
3) Folks need to know their strengthens -- in my tech experience, there are usually two types of folks:
a) Startup folks who thrive in chaos and like building from an idea to paper to actual company/technology ... usually to the max, the take-off stage and then, you hand off to
b) a 'general' manager types who prefer to work with good visibility, structure and predictability.
I suspect that Elon is of the former. There are few around who is a great combination of both. By the time you get to stage 3 of the company life cycle, you need to step back -- fence yourself off and go back and play or do whats best you are at. Google founders did that but not without obvious initial mistakes and hesitations.
Or he can just call it Elon's Fabulous Bacon Adventures in his next book.