Was gonna do that but I have been using Bluetooth in my DD (VW Tiguan), and the soundquality is not great, I hear a big difference if I compare to a CD, it sounds flat and hard. I'm not sure why, I suspect lossy codecs, I just Googled it and it way too much reading right now, I'll do it later.
But as a fact, streming audio thru my iPhone (from Spotify or Apple music) can not compare to playing a CD.
I was gonna have a nice stereo system in my Challenger with a subwoofer and good speakers with clarity, burt feeding a bad signal in to that will defeat the purpose of the whole thing. Will do more research when I get to that point.
I run a recording studio, and I also bought a couple of bluetooth recievers for my mixer, to easy have the musicians listen to music on their phones, (for reference etc) same thing, big quality loss.