My app uses UNMutableNotificationContent() to play a custom sound, and has a phrase as a message. I just got a vehicle with CarPlay. When my iPhone is connected to CarPlay, when the notification goes off at a time, it shows on the iPhone, but does not make any noise whatsoever. What I'd like to happen, is for CarPlay to announce the message when the notification goes off, like it does with Apple's messages app. As my phone is set right now, when I have my airPods in, it will announce the notification from my app. But not for CarPlay.
What do I need to add to my app to allow CarPlay to announce the message that comes in from a notification (again, local, not a push notification).