This is the opposite for me. I'm switching from an iphone to an android mainly so I can use android auto with google maps support in my new car. Google assistant is the cherry on top. This would be nice though since I would not have to switch phones just to get around apple carplay forcing their garbage maps on me.
Apple carplay and android auto allow you to view windows displayed by your phone on your car screen. While I can use google maps with it and get the voice directions, it does not support displaying the map on my car screen for google maps, only apple maps. I want to be able to quickly look at the physical map on the big screen in my car while driving like so: https://www.google.com/search?q=android+auto+maps&tbm=isch&s...
CarPlay does not let you use any maps app aside from Apple Maps. Which is a dealbreaker since where I live Apple Maps are terrible (and Google Maps aren't great either, I use a local mapping app)
