Sign up to see the future, today Can’t-miss innovations from the bleeding edge of science and tech Email address Sign Up Thank you! Shares of Elon Musk’s embattled carmaker Tesla slid over 13 percent Thursday morning after posting dismal second quarter results the night before. SpaceX’s stock has had a bruising month since hitting an all-time high after going public in mid-June. The mercurial entrepreneur didn’t rule out the possibility, saying that “we can’t talk about combining companies on an earnings call.” More on Musk: Elon Musk Says His Goal Is for SpaceX to Be Worth More Than the Entire Earth