Android Auto Wireless has not really taken off in the same way as Android Auto. While almost all major vehicles now feature an infotainment unit with Android Auto support, there are very few aftermarket head units available in the market that support Android Auto Wireless. A dongle by the name AAWireless now aims to bring wireless Android Auto to all vehicles or multimedia units that already have Android Auto support.
With wireless Android Auto, one can trigger the Android Auto experience on their vehicle's head unit without having to connect their Android device to it over USB. Instead, the head unit talks to the device wirelessly which is far more convenient. The Indiegogo campaign of the dongle describes it as a simple plug and play device that will allow the Android Auto-capable head unit in your vehicle to use a Wi-Fi connection instead of requiring it one to connect an Android device to it over USB thereby adding wireless Android Auto support to it.
Your Android device must also have support for wireless Android Auto. While there are very few devices in the market right now with wireless Android Auto support, this will change once Android 11 is released. After that, all Android devices with 5GHz Wi-Fi will support wireless Android Auto.
The project is being developed by Emil Borconi-Szedressy who had actually first demoed an app back in 2018 that added wireless Android Auto support to existing head units. That idea has evolved over the years and due to the massive user interest. The images you will see on the Indiegogo campaign page are not of the final unit. It will be much smaller and won't feature an Ethernet or USB-A port.
Since the team behind the dongle does not have access to much resources, they have opened an Indiegogo campaign to turn the AAWireless dongle into a reality. If you are interested in adding wireless Android Auto to your vehicle using a simple dongle, make sure to back the campaign which has already crossed 100% of its funding goal.