Tesla will phase out the Model S and X as it pivots toward robotaxis and humanoid robots, marking a major strategic shift. Summary:Elon Musk said Tesla will phase out Model S and Model X production, ending two of its longest-running vehicle lines. Tesla will retool its Fremont, California factory to manufacture humanoid robots, including the planned Optimus line. Tesla is set to end production of its Model S and Model X vehicles as the company accelerates a strategic pivot toward autonomous driving and humanoid robotics, according to comments from Chief Executive Elon Musk. The Model X followed in 2015, expanding Tesla’s lineup into the SUV segment, though it faced early reliability challenges.