On the company’s earnings call Wednesday, CEO Elon Musk said Tesla would be discontinuing production of its Model S and Model X vehicles next quarter. (For the uninitiated, together with the Model 3 and Model Y, the cars spell “S3XY.”)“We are going to convert that production space to an Optimus factory,” Musk said. The Model S is Tesla's luxury sedan. Meanwhile, Cybercab and Optimus models aren’t yet for sale. Tesla said Optimus would be available next year, while Cybercab would go into volume production in 2026.