it isn't full screen, it will support cars that have widescreen (horizontal) displays better.https://9to5google.com/2019/05/06/android-auto-redesign-dark-theme/
I am hoping this makes it to Volvo and I REALLY hope Volvo allows full screen mode.
yeah it kinda messed it up the screen because these cars dont have wide screens....they are portraitActually there is a way to enable this on the current Android version. I tried it on my '19 XC90 and it kind of messed up the screen and Waze did not really display properly so I disabled it.
Easily reversible if anyone cares to try it.