At 500m long, this track is a bad joke. It's much too short to demonstrate anything even remotely interesting. Yes, they'll be able to pump it down to a near vacuum, but you need a track orders of magnitude longer to accelerate a capsule fast enough to fly (and to decelerate it again, assuming you want to do more than one test). Real thermal expansion effects, a.k.a. the elephant in the hyperloop living room, also won't show up on such a short track.