[PeterAllen]

I guess most are aware of this but;

In NSW, and I assume the other States, there is an;

Insurance write-off = it is more financially viable for the insurance company to pay out rather than pay for repairs; and a,
Statutory write-off = where the government declares the car is too badly damaged (amongst other reasons) and the VIN number can no longer be used. This is to prevent rebirthing, i.e. a stolen car being given the identity of a supposedly rebuilt wreck.

I assume in this case it is an Insurance write-off.