"Android car unlocked" is an app that allows you to install and update the Android Auto service on your device, even if it is unavailable in the store.

How to use it?
1) Run "Android car unlocked"
2) Click the "Download & Install" button
3) Wait until the installation completed
4) Connect your device to the car's USB

Remember, a car that supports Android Auto is required. You can check supported cars on the Android Auto website.