It turns out that the price Elon Musk came up with to take Tesla Inc. private really was about weed, and that the embattled chief executive officer tweeted the figure to impress his girlfriend, the rapper Grimes.
The U.S. Securities and Exchange Commission made the connection clear at a Thursday press conference after announcing that it had sued Musk for falsely asserting that he had secured funding to take the company private at $420 a share.