Elon Musk took the stage in Austin on March 21 to officially launch Terafab, a joint venture between Tesla (TSLA), SpaceX, and xAI that he called "the most epic chip building exercise in history by far." The ambition is genuine. So is the risk. Investors need to understand both before drawing conclusions about what this means for the stock. Terafab is Tesla's plan to manufacture its own AI chips at scale within the United States. The goal is to end its dependence on external suppliers such as TSMC and S ...