When android auto first came out i remember that on the market appeared android sticks that were meant to expand the functionality of android auto. They where like the android auto wireless adaptors that are around nowdays but where a standalone android device that used a phone’s hotspot for an internet connection. Are these sticks still around or are they completely gone?
Do you mean CarDongle? That project turns out to be a scam. But, if you search for “android auto AI box” on aliexpress, there are gazillion devices now that connect to carplay/AA and basically turns it into a smart tv, like this one.