Tesla put its Cybercab into commercial service in Austin on Thursday, six weeks after quietly dropping the robotaxi from its 2026 volume-production plan. The launch proved the product works, but Tesla's own July letter names battery capacity as the real limit on how fast the fleet can grow.
Tesla launched the Cybercab at an invite-only event in downtown Austin on Thursday, and riders in the city can now hail the two-seat, driverless vehicle through Tesla's Robotaxi app. The Cybercab has no steering wheel and no pedals, joining the driverless Model Ys that have carried paying passengers in Austin since June 2025.
Shares rose 5.7% on Thursday ahead of the event, closing at about $376. CEO Elon Musk had spent the run-up teasing the launch, pinning a post on X about a coming wave of Cybercabs. The storm is modest so far: Texas has authorized 45 Cybercabs for driverless operation statewide.
Tesla pulled the volume promise in July
Six weeks before Thursday's launch, Tesla removed the Cybercab from its list of products expected to reach volume production in 2026. Its first-quarter update had said Cybercab, the Tesla Semi and Megapack 3 were on schedule for volume production starting in 2026. The second-quarter update, published July 22, dropped that promise for the Cybercab entirely, while the Semi and Megapack 3 stayed on track for production, though no longer volume production. The update also stopped promising volume production of the Optimus robot.
Tesla named the reason directly. According to Tesla's July letter: the company called battery pack capacity expansion "the main limiting factor to near-term vehicle production volume increase", and said it is increasing 4680 battery cell output to support the Cybercab, Semi and Model Y ramps. Notably, the factory itself isn't the constraint: Tesla's installed-capacity table shows the Cybercab line at Gigafactory Texas built to make more than 125,000 vehicles a year and already producing.
Spending is running ahead of revenue
Tesla has told investors the Cybercab is meant to eventually replace the existing Model Y fleet and become the largest-volume vehicle in the lineup. That ambition sits far from 45 cars on the road today, and the path to it runs through the battery constraint Tesla named in July.
The spending to get there is already underway. Tesla raised its 2026 capital-spending plan to more than $25 billion, nearly triple its recent annual levels. Second-quarter capital expenditures were more than double the year-ago figure, and free cash flow for the quarter was negative. Meanwhile, Tesla carries a forward price-to-earnings ratio of about 155, based on next year's expected earnings — a price that arguably assumes the Cybercab fleet expands without much delay.
Thursday's event proved the product and put paying riders in the seats, but it didn't move the constraint Tesla named in July. For now, the pace of the Cybercab business likely rests on battery output.
Source: The Motley Fool
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