If I understand this correctly, using LiveStream we can send live telemetry data from the car to the Pits to monitor car conditions. Can we also monitor the phone's speaker or headphone jack for in car Comms? I haven't tried this and am not sure if it is a feature 'yet', but it does open the door to possibility. If you can have access to the phone speaker through LiveStream you could enable pit to car comms and even have a Master setting for Race Control to car comms.