"A lot of investors asked us to do this." Tesla has reported its first annual revenue decline as it shifts its focus to artificial intelligence and robotics. Elon Musk’s company also confirmed plans to end production of its Model S and Model X vehicles. Musk said: “A lot of investors asked us to do this. Jessica Caldwell, Head of Insights at Edmunds, said:“The Model S and Model X have been low-volume vehicles for Tesla for a while now.