https://www.cnet.com/roadshow/news/tesla-staying-public/

In his now (in)famous August 7th message on Twitter, Musk indicated he was considering taking Tesla private at a price of $420, leading many to wonder whether it was a joke.

However, in a series of follow-up messages, Musk made it clear he was serious, indicating that current investors could sell at $420 or continue on with shares in the private entity. Musk even indicated that he'd secured funding for this move, something that would require billions of dollars to pay out those investors who didn't trade in their shares.