Musk: Tesla, SpaceX, and the Hyperloop at Khan Academy(youtu.be)1 points·by kurd_debuggr·13 ปีที่แล้ว·-1 commentsyoutu.beMusk: Tesla, SpaceX, and the Hyperloop at Khan Academyhttp://youtu.be/vDwzmJpI4io0 commentsPost comment—