Run yarn
Install Android Auto DHU, see guide: https://developer.android.com/training/cars/testing#test-auto
Run Android Auto DHU from your android SDK folder (open Android Studio SDK manager to see location)
e.g. /Users/gabe/Library/Android/sdk/extras/google/auto/desktop-head-unit --usb
Go to the settings on the Android Auto DHU, at the bottom click "See more in the phone app". Scroll to the bottom, where you'll see a version number. Tap it a bunch until you enable Developer mode. Then go to the "..." menu on the top right and click "Developer settings". Then scroll down until you find "Unknown sources". Enable that option.
Connect a physical Android device to your computer, make sure USB Debugging is enabled first
Run npx react-native start in the root folder of this project to start the Metro JS bundler
Run adb reverse tcp:8081 tcp:8081 to expose Metro on port 8081 to the device
Run the app on the device