Here in the UK you wouldn't need a heli to do the tracking. There are a number of anti-theft devices that use GPS coupled with the cellular phone network which can be configured to display the position of a vehicle on your PC screen (you can then relay this to the law enforcement agencies). Alternatively, there are systems that will inform the law for you. Some systems have options to allow you to speak to the occupants, or switch off the ignition system and disable the car remotely when the vehicle is at a standstill. More worryingly (for some) is the ability of some systems to listen to any sounds being made in the vehicle, while knowing the location of the vehicle
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