The Android Auto integration moved from the desktop emulator to actual vehicle hardware today. The implementation displays color-coded detection pins on the head unit's map and provides a tappable detail view for each alert, matching the phone app's functionality in a format designed for glance-and-go driving use.
Getting the app to run on real vehicle hardware required navigating Google Play's validation process for automotive templates. The vehicle's infotainment system runs its own app validator that checks Play Store ownership — a security measure that prevents sideloaded apps from accessing the automotive interface. The solution is publishing through Google Play Console's internal testing track, which satisfies the ownership check without requiring public review. Two additional requirements surfaced: the app's package identifier needed to move from a development namespace to a production one, and the automotive template permissions needed explicit declaration in the Play Console's form factors configuration.
The head unit display is now fully operational over USB connection, with wireless debugging enabled simultaneously for development logging. For the demo video, this means I can show the detection interface on the vehicle's built-in screen — a much more compelling visual than a phone propped on the dashboard.