Yes flac playback from via a suitable decoder. Haven't found car audio that can handle pcm audio directly so will be using an aux channel with a stand alone decoder.
I am not into competition audio since IMHO the poeple who enter audio competition have same mindset and classic car concourse entrants. People who own concourse wiining spend all thier time recreating the as new showroom presentation of a car but never either use and enjoy the car perfer the accolade of a show winning presentation.