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Wireless AA and CarPlay use a hotspot your car emits that your phone connects to and transfers the image/inputs/audio that way

Wireless CarPlay uses Bluetooth to exchange SSID and key info before switching over to WiFi for the duration of the session.

My car requires wired connectivity (USB) for Android Auto.

For a decent amount of the older android / CarPlay usb implementations - you can also buy little WiFi / USB dongles that perfectly enable wireless CarPlay - I’ve used them now on a few vehicles and they have been perfect !