Sir, step away from my vehicle lest I SMS you again

Britco & Bridco have developed the Mobile phone Automobile Security System (MASS), a device that allows car owners to monitor and control their cars via SMS. Say, for instance,
someone has broken your passenger side window in the interest of getting at that nice new
Pioneer AVIC-N1 you just had installed. You'll get an SMS
informing you that some dude has broken your passender side window; you then can sound an alarm, turn on a speaker to ask the burlgar to kindly step away from your vehicle, or you can simply listen in on what the friendly robber has to say.  If he decides he wants your car in its entirety, you can also shut off the engine via SMS (we don't even want to know the syntax for that one).  While this sounds like an intriguing idea, we're pretty sure this is going to be huge with all the wrong people.