I'm happy for you, users of Pixel and Nexus phones, because Google enabled Android Auto Wireless for you this week. The devices Pixel, Pixel XL, Pixel 2, Pixel 2 XL, Nexus 5X and Nexus 6P with Android Oreo or higher are compatible with the new feature, which automatically loads Android Auto on the screen of your car when you enter the vehicle. You do not need to take the phone out of your pocket or plug it in; It connects automatically through Wi-Fi.
So far, the support seems to be only for devices in North America, and the only main units that work wirelessly are available at JVC and Kenwood. These companies presented their compatible main units at CES this year. However, Google says it expects "more products to be deployed throughout the year," as well as support for additional phones. Even so, it does not seem that the old screens will be able to handle this wireless configuration, taking into account that all these new main units have just been announced. Google has not clarified in any way.