New idea, what do you guys think

[LightningGSX]

I'm sure someone already makes something similar, but mine is easier and cheaper.

Basically its an in car GPS with a GSM modem.You can send a text/SMS message from a cell phone and your car will send back its location.You can also lock/unlock the doors, start/stop, roll up windows/close sunroof, etc from your cell phone.I'm also working in a way to stop the vehicle if its stolen.You can send a "kill" command to the vehicle, it will wait until the speed drops below say 5-10 MPH, and then kill the fuel pump or ignition and send its location to your cell phone.I could use a high gain GSM antenna to make sure it always has service, and it could log location and send the last known if the GPS loses signal.It can be made to passive arm, which would pretty much make a car unstealable, well not totaly, but a thief wouldn't get very far and you would get your car back quickely(and more than likely in good condition).

Its looking like I could keep the price below $350, what do you guys think?

BTW I'm also thinking of making it into a dog collar as well, if I can find parts small enough.