I'm getting increasingly bugged by the way the car automatically starts playing music when you turn it on (even when the music was off before) and how it switches to the new source every time one becomes available - even if you were already listening to something else!
Last night I walked out of a petrol station and as I got in range of the car it stopped playing music off the SD card and switched to playing from my phone via bluetooth.
I can't believe this is deliberate design; looks like a bug to me. I hope they release an upgrade to fix it.