SpaceX will construct a one-mile test track adjacent to their Hawthorne, California headquarters. They have invited teams will to test their human-scale pods during a competition weekend at the track, currently targeted for June 2016. The knowledge gained here will continue to be open-sourced.
The hyperloop test track will be 1-mile long, 6 feet in diameter and can have a 99.8% vacuum environment.
Hyperloop pod teams will be can select pressures from 0.02 psi (~99.8% vacuum) to 14.7 psi (pressure at sea level).
It will take between 15-30 minutes to pump the pressure down to 0.02 psi.