@funnybone
If the offender was parked in the street blocking your driveway and you called the police who had it towed, then mesirah might be an issue.
BUT, if the car, as the OP wrote, is parked in your driveway on your private land, then you as the owner van call a tow company to have it taken away at the offender’s expense. You have not turned the offender over to a non-rabbinic authority (police, secular courts). The owner of private property has the right to have a car towed.
AND, yes I have checked this out with my Rav. I am a property owner and have had problems with people parking on my land when they are not tenants, customers or guests. I have the right to tow, I don’t need to call the [police. The tow companies must report in a timely manner to the police so if the towed party calls in a stolen car report it can be checked against tow lists.