@hazardwarning The only Bluetooth connection in my car is a $13 unit that clips to the sun visor. It works well enough with navigation apps but I mostly use it to automatically set DoNoDisturb while Driving mode.
For music, I have CD (aiff, aac, wma & mp3) & a clever USB port. The latter can take an ordinary USB stick with the same music formats as the CD or a iPod (Classic, Nano, iPod Touch or iPhone). In iPod mode the head unit & steering wheel buttons operate all the normal iPod music controls.
// @matigo @streakmachine