@GNBRETT I meant to comment on the Airtag thing. We have Android phones, I don't do Apple AT ALL but I did look in to the Airtags and tested them against the Android Tile.
I got an old Iphone for basically free, no service plan just connected it to wifi. Got some Airtags for like $20 each, cut the speaker out of them so they won't make any sounds.
I put a tile and an Airtag in each of our vehicles and tested for a week. I was able to track our cars all over town no problem with the Airtags. Tile didn't get enough updates to be meaningful.
We now have Airtags in all our cars, hidden deep in them like removed carpet and upholstery deep, with speakers removed. However for like $5/mo you can get a GPS tracker with a SIM card that's real time tracking through an app. I found a tracker that is battery powered and you can hide in the car somewhere and run wires to the battery to keep the GPS battery charged. I think the GPS was like $40 so a cheap and easy solution and more robust than Airtags.
Yes, with any phone you can "scan" and it'll tell you there's a foreign Airtag in your vicinity and you can enable a tone. With the speaker removed the Airtag will remain silent. Maybe the thief takes time to try to find it, maybe not. Maybe them knowing one's in the car is enough for them to look for another target. Who knows.
I'll add, my buddy's Trackhawk was stolen. He had an Airtag in it and was able to locate the vehicle pretty quickly/easily. However the police would not come when he was at the location. At that point it's how far you wanna take things I guess. Maybe call the cops and tell them you've located your stolen car and they have 15 minutes to show up before you go knock on the door demanding it back and see what happens.