Common practice on South African roads is that the left lane is reserved for slow-moving traffic, and traffic using the right lane must yield to traffic wishing to overtake.
It still remains a mystery as to why this Mini Cooper Convertible driver slowed down on an Australian freeway, but the sudden braking caused an SUV to crash into its rear.
Always check your mirrors before you slow down, while you are stationary, before changing lanes, and before and after turns.
Watch the video below: