Greg Murphy (born 23 August 1972 in Hastings, New Zealand) is a racing driver, best known as a four-time winner of the Bathurst 1000. Greg Murphy joined Jeremy Clarkson and Richard Hammond presenting Top Gear Live, when it had its first international Live show at ASB Showgrounds in Auckland from February 12 - 15 2009, and again when the show returned in 2010 with James May replacing Hammond.

Murphy became involved in motor sports by the age of eight, progressing through karts to saloons and single-seaters before moving to Australia. He first competed at the Bathurst circuit in 1994. The following two years he drove for Brad Jones Racing in the Australian Super Touring Championship and the Holden Racing Team (HRT) in endurance events, winning the Bathurst 1000 with Craig Lowndes in 1996. He drove for the HRT full time in 1997 and almost won the championship. Due to Craig Lowndes' return from overseas, Murphy only drove for the team in the endurance races in 1998.

In 1999, he joined Wynns Racing and paired with Steven Richards to win the Bathurst 1000. In the 2001 V8 Supercar season, Murphy joined the newly-formed Kmart Racing team and had two Bathurst 1000 wins with teammate Rick Kelly, in 2003 and 2004. Murphy had two championship runner-ups while at Kmart Racing, in 2002 and 2003. In 2001 and 2004 he finished fourth in the championship.

Paul Dumbrell (born 1 September 1982 in Melbourne, Victoria, Australia), is an Australian business executive and racing driver.

Son of former racing driver Garry Dumbrell, Paul Dumbrell started racing in karts in 1996 and by the end of 1997 Dumbrell was looking to further his racing. He was educated at Xavier College in Kew, Melbourne and resides in Melbourne, Australia. He competed in the Australian Sprint Kart National Championships in April 1998 and then attended the Jim Russell International School of Racing in England. During the course, Dumbrell had his first experience in a racing car, a Formula Vauxhall. At age 15 he was the youngest in the class and even though he was the fastest graduate from the school, he was ineligible for the final race, for which drivers had to be 16.

On returning to Australia he looked to do a couple of races in Formula Ford but broke his hip when hit by a car while training on his mountain bike. This injury prevented him from racing for 8 weeks and put an end to any chance of running a Formula Ford. At the end of 1998 he entered his first production car race, the GT Production three-hour at Bathurst in a Subaru WRX, but his race ended with mechanical failure. For the 1999 season he drove a Formula Holden in the Australian Drivers' Championship, and had his first race in the V8 Supercar Championship Series in August 1999 at Symmons Plains, in Tasmania.

Marcos Ambrose (born 1 September 1976 in Launceston, Tasmania) is a championship winning Australian racing car driver. He currently drives the #9 Stanley Black & Decker Ford Fusion for Richard Petty Motorsports in the NASCAR Sprint Cup Series. Ambrose is a dual Australian V8 Supercar champion in 2003 and 2004, having spearheaded Stone Brothers Racing's rise in the sport which saw the team dominate for three years after a five-year drought for Ford teams in the championship.

In 2006 Ambrose relocated to the USA to pursue racing in NASCAR, starting with the Camping World Truck Series; driving a Ford for JTG Daugherty Racing. He moved up to the Nationwide Series in 2007 with the same team; driving the #59 Kingsford Charcoal Ford Fusion for JTG Daugherty Racing, before racing in the Sprint Cup Series with Wood Brothers Racing, first with Fords then Toyotas. Ambrose joined Richard Petty Motorsports in 2011 where after four years in the Sprint cup he scored his first race win at Watkins Glen, becoming the first Australian driver to do so.

Jonathon Webb (born 10 December 1983 in Castle Hill, New South Wales) is an Australian motor racing driver, currently competing in the V8 Supercar Championship Series.

Webb, a former BMX bicycle racing champion, first came to national attention racing Porsches out of the family run Tekno Autosports team which had previously operated racing cars for his father Steve. Webb spent several years racing in the Australian Carrera Cup Championship finishing eighth in the inaugural 2003 series. Webb's best run with Carrera Cup was third place in the 2005 series. The following year Webb made his debut in V8 Supercar as an endurance race co-driver for Marcus Marshall in the Paul Cruickshank Racing prepared Ford Falcon.

For 2007 Webb focused full-time on V8 Supercar racing, taking the family Tekno Autosport team into the Fujitsu V8 Supercar Series with Stone Brothers Racing preparing a Ford Falcon. Webb finished fourth in his first season, improving to third in 2008.