I don't think Tesla would worry for Hyperloop in the case of SF-to-SJ type commutes -- BART and Caltrain would probably be the ones who should worry. In fact in the US, I don't think there'd be a case where Tesla would worry about Hyperloop at all, as it's pretty car-driven culturally and architecturally -- people in general are walking-averse and still need cars to get to places that are between "stations". It might be different in other places like Europe or Asia though.