Also found this;
Google’s updated Android Auto support page
now notes that “any smartphone with Android 11.0” will be able to connect to Android Auto wirelessly. It’s likely in addition to Google and Samsung, phones from manufacturers like LG, Motorola, and OnePlus may also receive support when Android 11 is installed.
BUT ANDROID 11 SUPPORT FOR ANDROID AUTO WIRELESS COMES WITH A FEW REQUIREMENTS
But Android 11 support for Android Auto wireless comes with a few requirements: you need to have both a phone and Android Auto head unit that supports 5GHz Wi-Fi. If you live in Japan or Russia, you won’t have access as Google says those territories do not support Android Auto’s wireless feature
. Even in the EU, there are additional requirements; Google says Android phones in the EU that use 5GHz Wi-Fi in the car must “comply with additional regulatory requirements
,” but we’re not quite sure what that means for you.
How Android Auto Wireless Works
Most connections between phones and car radios use Bluetooth
. This is how most hands-free calling implementations work, and you can also stream music over Bluetooth. However, Bluetooth connections don't have the bandwidth required by Android Auto Wireless.
To achieve a wireless connection between your phone and your car, Android Auto Wireless taps into the Wi-Fi functionality of your phone and your car head. It only works with vehicles that have Wi-Fi functionality.
Compatibility is further limited to specific car heads and phones that are designed to work with the system.
When a compatible phone is paired to a compatible car head, Android Auto Wireless works exactly like the wired version, only without wires. Your phone does all the heavy lifting, the information displays on your car touchscreen
and things like driving directions and answers that you ask Google Assistant play through the car speakers.