Over the weekend teams, made up of a driver and navigator, must attempt to compete a number of courses marked out though rocks, trees and soil.
While there is a set time limit to complete the course, there is no points advantage for finishing the course in a quicker time - it's not a race and making it so would change the categorisation of the event requiring a different safety protections for the competitors, staff and spectators.
As the event is about low-speed technical crawling, spectators can get relatively close to the course with a high degree of safety.
Over the years this rule was removed as vehicles became modified beyond what was legally allowed on public roads to complete the harder course layouts.
In 2015 the event featured on Australian sport television program RPM in a segment with Kate Peck.