Tesla Robotaxi Expands, Semi Battery Sizes Confirmed

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- Electrek Podcast confirms Tesla Semi battery sizes of 822 kWh and 548 kWh.
- Electrek Podcast reports Tesla’s 4680 battery cells are underperforming and frustrating buyers.
- Electrek Podcast notes Tesla filed new Roadster trademarks featuring a unique badge.
- Electrek Podcast highlights Rivian CEO’s hint at an R2 pickup and R2X variants as production ramps.
- Electrek Podcast announces BMW’s 2027 iX3 preorders start at $61,500 with up to 434 mi range.
Why it matters: Tesla’s robotaxi expansion adds thousands of miles of real‑world driving data, accelerating its autonomous‑driving AI training, while the 4680 battery shortfall pressures buyers and slows adoption of Tesla’s EVs.


