Rivian lost $3.6B last year on 42,000 deliveries, equating to $86,000 of value destroyed per vehicle. Its new partnership with Uber for 50,000 robotaxis by 2031 lacks a vehicle design, factory, autonomy software, or clear timeline. The company's fundamental economics are unsound, and its ambitious autonomy partnership appears strategically unrealistic given its lack of scale, expertise, and comparable inefficiency versus focused competitors. Rivian's business model is unsustainable without continuous external subsidization, and its new strategic initiative highlights execution risk rather than a viable path to profitability. A new major investor or partner could provide a longer lifeline, or technology breakthroughs could unexpectedly accelerate its timeline.