Review on CarlinKit Wired CarPlay Dongle Android Auto for Car Radio - Upgrade to Android System Version 4.4.2 and Above, Unlock CarPlay with AutoKit App Integration by Sam Kriegshauser

Allows your Android to connect to an Android car stereo (and possibly other car stereos). It looks and feels cheap, but when I set up my car stereo, Android Auto opens automatically. The only downside is that the APK file takes a few minutes to download even though it's a 7MB file, and it can crash a few times, requiring a restart of the download (your server must be very slow, since my own internet connection can download such a file somewhere else). in a second)