NRMA after your car has been in an accident, can request for Odometer Records from Service NSW < formerly RMS < formerly RTA.
This is how they'll secure data that's tangible - in black and white.
Post #172:- djvoodoo - Dave - alluded to that.
NRMA after an accident, can also request for registration of your primary vehicle.
This will also be tangible.
Post #177:- Thanks Brett