Σε σχετική αναζήτηση βρήκα αυτό στο επίσημο site (σε USA mode) του παιχνιδιού:
όπως και αυτό:...Additionally, in another update we will add the possibility to generate a track by capturing the GPS coordinate data of a mobile app while you are driving that course. This GPS-generated tracks will be available in the game as playable content...
GPS Visualiser: In a future update, we will add the GPS Visualiser. This is a feature that allows you to import Controller Area Network (CAN), used to regulate automobile systems, and GPS coordinate data from a real life car into Gran Turismo 6, and visualise the data as a replay in the game. The feature is planned to be compatible with the Toyota Motor CorporationΆs CAN-Gateway ECU.