I guess the only consolation is that satellite images show the prevailing winds are blowing away from you. That helps to slow down the advance for the fire front.
If it were me, and I had to load up anything and escape, I wouldn't care whether the vehicle or apparatus was registered. Best you can do is to head westward as if you had much choice of roads. That huge mountainous region between you and Sydney has few roads with which to bring in equipment. Looks like the major means of fighting the fires is from the air.
