David Walker (born 10 June 1941 in Sydney) is an Australian former racing driver who drove for Lotus in the 1971 and 1972 Formula One World Championships. Career Walker had some international racing experience early in his career in the Australian rounds of the Tasman series in 1964–65 on challenging tracks like Longford and Sandown at a time when most Australian National 2.5 drives were near world class and he also finished 5th in the ex Follmer Lotus 70 in the Nov 1970 Australian GP at Warwick Farm. While few would have been surprised that Walker failed to match the fastest Australian F5000 driver Frank Matich, Neil Allen and Kevin Bartlett, it was a pointer to Walker's later big car problems that at Warwick Farm he was slower than Australia's leading 2-litre single seater exponents, Kevin Bartlett, Max Stewart and Leo Geoghegan. During the 1960s Walker's racing career faltered (he was the 1969 British Formula Ford Champion and finished third in the 1969 European Formula Ford Championship), however finally broke through racing a works Team Lotus Formula Three car in 1970 and 1971. Walker dominated Formula 3 in those years against strong opposition including from James Hunt who found Walker's later failure in F1 inexplicable. He won 25 out of 32 races in 1971, including the Formula Three support races at the Monaco Grand Prix and the British Grand Prix at Silverstone. By the end of the year he had won both the Shell and Forward Trust UK Formula Three titles. In his initial non championship races in a Lotus 72 in early 1971 at the Race of Champion at Brands Hatch and at Hockenheim, Walker qualified only on the 3rd row and was no faster than John Miles in a BRM P160 who Walker had effectively replaced in the Lotus team. Lotus founder Colin Chapman, was contractually bound by his John Player, British Imperial sponsors who rated Walker highly, to put Walker in F1 and when he won the 1971 F3 championship give Walker a full season Lotus F1 team drive. Imperial Tobacco extraordinarily wanted, Dave Walker to lead the Lotus F1 team in 1972 as they thought Fittipaldi form was patchy and he had not done enough. Walker was handed his Formula One debut at the 1971 Dutch Grand Prix to drive the Lotus 56B, powered by a Pratt & Whitney turbine engine. During the rain-affected race, Walker