The interior of the vehicle is not yours. The use of the parking lot is based on whether, or not the employee is doing his work to your satisfaction, and whether, or not you're willing extend parking priviledges to that employee based on his otherwise satisfactory work. If you tow the car w/o the owner's knowledge, you are liable for the charges and damages for the action. The police will not enter the vehicle, nor will they assist you with the illegal tow. If you tow the car w/o the owner's permission, you are guilty of grand theft auto.
Wouldn't that be a sight to behold?
Can you imagine how the control freaks on this thread would react to they themselves being subjected to other control freaks (jail wardens and many cops)? LOL! I'd almost pay to watch it.