Peter Geoffrey Brock, known as "Peter Perfect", "The King of the Mountain", or simply "Brocky", was an Australian motor racing driver. Brock was most often associated with Holden for almost 40 years, although he raced vehicles of other manufacturers including BMW, Ford, Volvo, Porsche and Peugeot. He won the Bathurst 1000 endurance race nine times, the Sandown 500 touring car race nine times, the Australian Touring Car Championship three times, the Bathurst 24 Hour once and was inducted into the V8 Supercars Hall of Fame in 2001. Brock's business activities included the Holden Dealer Team (HDT) that produced Brock's racing machines as well as a number of modified high-performance road versions of his racing cars.

The Sandown 500 is an annual endurance motor race which is staged at the Sandown Raceway, near Melbourne, Victoria, Australia from 1964. The event's name, distance – and the category of cars competing in it – has varied widely throughout its history. Most recently, the event was held as a championship event for Supercars from 2003 to 2007 and from 2012 to 2019.