it really depends….if you are renting the car (with a reputable company like Hertz, Thrifty, Avis or europcar) it is full comp insurance plus a hefty $ 3000 excess (Regardless who is at fault!!!)....
"13.2 million motor vehicles, including motor cycles, registered in Australia
almost every dad a car is sold so there is not an exact number unless they stop selling cars
40 million cars
10 million(approximately)