https://www.theregister.co.uk/2018/09/27/sec_musk_tweet/

Tesla and SpaceX supremo Elon Musk is being sued by America's financial watchdog – the Securities and Exchange Commission – after he mused on Twitter about taking his publicly traded automaker private.

The lawsuit, filed on Thursday, is directly related to the tweet-storm that kicked off at 1248 UTC on August 7, when Musk told his 22 million followers: “Am considering taking Tesla private at $420. Funding secured.”