Tesla will launch production of the long-awaited Cybertruck pickup out of its new Austin, Texas, factory sometime next year and is working on a dedicated “robotaxi” model using the company’s autonomous vehicle software, CEO Elon Musk said at an opening day ceremony for the plant.

Musk, wearing a cowboy hat and sunglasses, delivered the first batch of Model Y crossovers out of the massive Austin facility late Thursday and said the factory would scale to 500,000 Model Ys per year before adding Cybertruck production. The plant could eventually reach 1 million units per year, Musk said.

On a January earnings call, Musk had hedged on a 2023 rollout for the Cybertruck, which originally was targeted for launch last year. Musk was more definitive this week about the Tesla product roadmap.