OpenAI’s valuation has skyrocketed to $500 billion, overtaking Elon Musk’s SpaceX to become the world’s most valuable startup. The surge highlights investor enthusiasm for generative AI, even as the company remains unprofitable. Meanwhile, Tesla reported record-breaking Q3 deliveries of nearly half a million vehicles, driven by buyers rushing to claim expiring federal tax credits. The question now: can Tesla sustain this momentum once incentives fade?