At the competition, sponsored by SpaceX, specially selected teams will be entering designs (so more blueprints, less miniature hyperloop pods) for the judges consideration. A detailed set of rules was announced by SpaceX today. Among them, it lists some of the broad requirements for the pods. In terms of dimensions, they have to be under 11,000 pounds and less than 14 feet long. Among the other requirements, they also have to have brakes, communications, telemetry, and it is recommended that the pods levitate. From the rules, "The mechanism(s) for levitation is up to the entrant and is not actually required. Wheeled vehicles (e.g. an "electric car in a vacuum") can compete, but are unlikely to win prizes."