I suspect this is a bug with iOS and not with Carplay, but, it was too aggravating not to share. Here's the setup:
1) Driving and playing music from my phone, through Carplay.
2) Get a call from a friend. Accept the call, have conversation, park car.
3) End call and immediately shut car off, before Carplay can revert back to the music playing.
4) Result: Nothing obvious for about 10 seconds until I'm out of the car and walking into a store. Then, iPhone resumes playing the song I was listening to, prior to the phone call, at full volume, through the phone. Volume control will not work. Closed the music app in the phone and it's STILL playing! Double clicked the home button and shut down ALL apps. Music still blasting out my phone at full volume. People now staring. Shut the screen off, music still playing. Getting embarrassed. Had to hard reboot the phone to get it to shut up!
