[Apologies if this is a FAQ.] When I play music in my Model S over Bluetooth -- specifically using the Spotify app on my iPhone -- the Tesla display doesn't show the progress of the song. It does if you use Slacker. This should be technically possible because when I play audio over Bluetooth in my 2014 Camry (again, with Spotify on my iPhone), its audio display does show a progress bar with minutes and seconds. I just want to confirm that this is a missing feature (and not user error by me) and ask if this request has been made to Tesla. Thanks.