Google is finally pulling the plug on Android Auto for phone screen apps that works via in an pop-up message. This feature is used by those people who don't have cars with latest Android Auto versions on the infotainment screens.
However, if still user wants to access the app, they have to switch to the Google's Assistant's driving mode.
The Android Auto is an affordable solution that every vehicle owner can use to get all the benefits. However, now they have to purchase the costly head unit of Android Auto or buy a new car.