For those wishing to be untethered when they use Android Auto in their cars, your prayers have been answered… sort of. There are a few caveats. One is that it only works with select Pixel and Nexus devices as well as specific head units that are Wi-Fi-certified. The smartphones you need would be the Pixel, Pixel XL, Pixel 2, Pixel 2 XL, Nexus 5, or the Nexus 6P. JVC and Kenwood have a few head units that are Wi-Fi-certified but a lot of these haven’t hit the market yet.
If you’re one of the select few that does have access to these devices, setup is pretty painless. You first have to connect your phone via USB to set the feature up. But once you’ve done that, you can connect your phone to your dash wirelessly the next time. Google says they do plan to support other phones in the future. So we’re keeping an eye out for that.
Source: Android Authority