www.ezitrak.com.au are in NSW. their system works on the mobile phone network so you can self monitor your vehicle, call the cops and turn your car off.Whilst all the time giving "blue" advise to the person driving your car.
You can choose between monitored "back to base" for a sum each month OR look after it yourself via your mobile. You can even monitor speed ,direction and all that stuff. ( directory coordinates )
I'm spruiking this gear but haven't bought it yet. My car is already wired for the gear and I haven't spoken to them for quite a while. If they're still in business I can imagine the system is even better.
Smithy