Not a direct answer but something that might mitigate. I have these motion-activated alarms on my bike, moped, and in my backpack, and activate the alarms when

Not a direct answer but something that might mitigate. I have these motion-activated alarms on my bike, moped, and in my backpack, and activate the alarms when I'm not within view of them. https://www.amazon.com/gp/product/B0734QN8KR/ https://www.amazon.com/gp/product/B0734QN8KR/ I imagine you could probably ziptie one (or maybe a few, though you'd have to carry a few remotes) onto an inconspicuous location on the car. It would be a good deterrent for car thieves and possibly also towing companies. I actually want to work on a modification of this device where it shoots out fart spray in addition to the loud alarm.