>Thank you, it is a very true statement, it is called ON-STAR and is a
 [snip]
  > but all it takes is one phone call to a
  >GM dealer to confirm this.
I am aware that the ON-Star system will do the functions you describe.
As well, private individuals can easily engineer a similar system that
operates via radio signals and embedded codes.  No big deal in getting
it to work.
I'm interested in how the police would react if they did commandeer a
vehicle so equipped, and the owner activated his theft prevention
devices.  The officer in hot pursuit in said commandeered vehicle, dead
in the water.  How would this turn of events be handled by the LEO?
Would the car owner be charged with obstruction of justice?  What if he
was unsure of the status of the LEO and activated his theft prevention
device in good faith that he was thwarting a crook?   Interesting.
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