Musk: Cybercab motor uses no rare earth metals, 18% smaller and 25% lighter than rivals

elonmusk · x · 2026-09-04

Elon Musk shared details of Tesla's Cybercab drive unit, saying its motor uses no rare earth metals while maintaining the same range — "extremely hard to achieve."

The unit features a simplified bar-wound stator and lubrication system, with an architecture enabling fully automated sub-10-second cycle times. It is 18% smaller, 25% lighter and more efficient than other top-performing EV drive units.

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