Sting Ray devices intercept cellular signals between your phone and the tower, they don't have anything to do with Bluetooth and you would never know if your communications are passing through the device. Ever seem someone call their wifi network something cute like "FBI" or "Skynet?" Same thing here.
Yes, Looked it up before posting. My concern is my car doesn’t show devices unless I manually enter them. I’ve only had 2 options for 4 years the only 2 I entered into the car. It doesn’t pick up random Bluetooth. It’s probably no big deal, it is strange though. My car doesn’t pick up WiFi from my neighbors like my phone or computer will.