According to @garyblack00, TSLA fell 3.4% yesterday mainly because MS downgraded the stock to Hold from Buy, which pressured the multiple; source: Gary Black on X, Dec 9, 2025, https://twitter.com/garyblack00/status/1998331395500814720. He adds that investors are questioning whether Optimus is being tele-operated rather than AI-driven, which would limit scalability; source: Gary Black on X, Dec 9, 2025, https://twitter.com/garyblack00/status/1998331395500814720. He further argues that if Robotaxis require one-to-one safety monitors, the model is not scalable and TSLA should not trade at a 2026 P/E near 200x versus long-term consensus EPS growth of 35%; source: Gary Black on X, Dec 9, 2025, https://twitter.com/garyblack00/status/1998331395500814720.