Elon Musk, already in hot water over his Twitter use, posted another Tesla Inc. production forecast reminiscent of the one that landed him before a federal judge earlier this month.

Musk wrote Sunday that Tesla will make more than 500,000 cars in the next 12 months. A similar tweet sent almost two months ago, in which Musk said the company would build half a million vehicles in 2019, led the U.S. Securities and Exchange Commission to argue he was in contempt of a settlement reached with the regulator last year.

The latest forecast, given as a seemingly innocuous aside in a discussion about the future value of Tesla vehicles, nonetheless came as Musk's lawyers are negotiating with the SEC over an agreement that put controls on the billionaire's tweeting. A U.S. judge gave the two sides until Thursday to meet for at least an hour and resolve their differences. If they can't, she'll rule whether Musk is in contempt.