'Crossing the Nullarbor', for many Australians, is a quintessential experience of the 'Australian Outback'. Stickers bought from roadhouses on the highway show 'I have crossed the Nullarbor', and can be seen on vehicles of varying quality or capacity for long distance travel.

The Nullarbor Plain is part of the area of flat, almost treeless, arid or semi-arid country of southern Australia, located on the Great Australian Bight. It is the world's largest single piece of limestone, and occupies an area of about 200,000 square kilometres.  Its considered by many travellers to be a pilgrimage and many passing through Australia make it a priority to drive it.     

The process of 'beating the crowds' on overbooked air services at the time of special sporting events can also see significant numbers of vehicles on the road.