Just did some rough math on this. He's reported to have 55% of SpaceX, recently valued at 27.5B [1], and ~19% of Tesla [2], most recently at ~44B, for a combined net worth of ~23B (before any debt). He therefore definitely couldn't personally buy out Tesla at current prices, and any significant investment of personal funds would require the sale of SpaceX shares.
Also, much of his liquid pocket money has come from loans backed by his Tesla Stock. This could be a problem if Tesla stock price drops too much, as the stock he has pledge is required to be no less than a multiple of the money he has borrowed. [3]
Also, much of his liquid pocket money has come from loans backed by his Tesla Stock. This could be a problem if Tesla stock price drops too much, as the stock he has pledge is required to be no less than a multiple of the money he has borrowed. [3]
Disclosure: I am short Tesla.
[1] https://www.cnbc.com/2018/04/13/equidate-spacex-27-billion-v... [2] https://money.usnews.com/investing/stock-market-news/article... [3] https://www.forbes.com/sites/jimcollins/2018/05/18/musk-has-...