What is changing at Giga Texas — two 12-hour shifts, a third Cortex 2 cooling plant, and the Optimus factory?

Joe Tegtmeyer’s November 2 Giga Texas update shows two 12-hour production shifts, a third cooling plant and an extension for the Cortex 2 AI training cluster, and continued Optimus factory progress. Why cooling is the tell: AI clusters turn electricity into heat at industrial scale, and nobody builds a third cooling plant for a pilot project.

Factory-watchers with drones are often the first to know how Tesla’s plans are really going. Short answer: the November 2 flyover of Giga Texas by longtime site watcher Joe Tegtmeyer shows the Austin campus running two 12-hour production shifts, a third cooling plant and an extension taking shape for Cortex 2 — Tesla’s next AI training cluster — and continued progress on the Optimus robot factory.Why it matters — read the concrete, not the captions: cooling plants are the tell for serious compute. AI training clusters turn electricity into heat at industrial scale, and you do not build a third cooling plant for a pilot project; you build it because the computers are coming and they must run around the clock.

Two 12-hour shifts tell the same story on the vehicle side: the factory’s constraint is no longer demand for hours in the day, it is throughput. And every month of visible Optimus factory progress is Tesla spending its scarcest asset — finished floor space — on robots rather than cars.How to watch like an engineer: count cooling capacity, roof completions, and shift patterns across several flyovers. Single photos can mislead; the trend across weeks is the ground truth no press release can spin.Ad’s take: Giga Texas is quietly becoming two factories in one fence — cars for revenue today, compute and robots for the company Tesla says it wants to be.

The cooling plants say the second factory is not a slide deck.