It’s no different than how the old Ford Sync or something else could have been compromised.

The two big things here in my mind are:

1. Android Automotive has gotten very popular since it provides so much and writing your own OS is very very hard and expensive as so many car makers found out

2. Aftermarket head units often use it (see #1) so it’s likely far easier to get out there than if you had to compromise Ford/VW/Volvo/whoever