How Elon Musk Became World's Richest Man Overnight ?

As of my last knowledge update in September 2021, Elon Musk had become one of the richest individuals in the world due to his involvement in multiple successful ventures, primarily Tesla and SpaceX. However, there was no information available up to that point indicating that he became the world's richest man overnight in a sudden or unexpected manner.

It's possible that there have been developments or events after my last update that I'm not aware of. If you're referring to a specific incident or event that occurred after September 2021, I recommend checking the latest news sources for accurate and up-to-date information on this topic.