This idea would be very helpful for when we are at work and theft of our Porsche occurs. Install a unit somewhere in the car such that when the car
is started, a signal/call is sent to your cell phone. If you have LoJack, you can at that point (perhaps after some verification that yes, your car is gone) notify Police to start the tracking process.

This unit could be turned off for when you start the car or you know someone else will start your car.