no, the hockey table thing is a convenient (but unnecessary) side effect. Moving the air from front to back (with a pump) is needed to compensate for being in

no, the hockey table thing is a convenient (but unnecessary) side effect. Moving the air from front to back (with a pump) is needed to compensate for being in a partial vacuum rather than a true vacuum. Without the air pump you don't have a hyperloop. You just have a maglev in a tunnel. I never implied that moving the air provided the motion.