I know Holden bought out their Holden Advantage deal, in Stato's and HSV's. You can communicate back to base, and they can remotely shut off the engine if the car has been stolen etc... Quite good when my friend was telling me about it.

As for alarms with tracking. They do exist. AutoWatch is one of the leaders in car alarm's. I will talk to my mate (one of the acredited AutoWatch installers in Perth) who has contacts at AutoWatch and see what they have to offer.

Also maybe I can arrange a group buy/install. Is that OK?