Android Auto Wireless now available on select phones
Android Auto will now be available over Wi-Fi when used with select phones and compatible car head units. For now, Android Auto Wireless will be limited to the North American region.
Currently, to use Android Auto in cars, the phone should be running on Android 5.0 (Lollipop) or above and the head unit of the car should be compatible with it. A USB cable is required to connect the phone to the system. However, with wireless Android Auto, the phone will connect automatically to the system using Wi-Fi. System requirements include Android 8.0 (Oreo) or above, Android Auto app version over 3.1 and a compatible infotainment system. Currently only the Pixel, Pixel XL, Pixel 2, Pixel 2 XL and the Nexus 5X or 6P are supported.
According to the release notes, aftermarket head units from JVC and Kenwood are available with this feature. Google will add support for more devices and car systems over the future. It is not yet known if infotainment systems in some cars like Skoda, that have built in Wi-Fi will be compatible or not.
Source - Android Auto User Community