Tesla attributed the revenue decline to a drop in vehicle deliveries, less money from regulatory credit sales and a lower average selling price for its vehicles. Still, Musk struck an optimistic tone on Tesla’s post-earnings call and is banking on a rapid expansion of the company’s robotaxi service.

The Austin-based EV company is still working on taking safety drivers out of the passenger seats and expanding into new cities.

The 54-year-old billionaire shared a post that read, “I’d say confidently next year,” Musk, the CEO of Tesla, said on the call. “I’m not sure when next year, but confidently next year."