Elon Musk says he wasn't on drugs during a chaotic all-hands at SpaceX — he was just really tired

• Elon Musk says tiredness rather than drugs led to a chaotic presentation at a SpaceX event.
• The WSJ reported that a 2017 presentation by Musk sparked concerns that Musk was on drugs.
• SpaceX released a video of what appears to be the source of the concerns.

Elon Musk said sleep deprivation, not drugs, led to a chaotic presentation at a 2017 SpaceX event.