GM Holden Ltd, 18 May 1967, Photograph, BRG 213/94/12/7/9
Black and white photographs from the records of the Holden Engineering Department, Proving Ground, of the construction of test roads constructed in the centre of the speed loop at General Motors-Holden's Proving Grounds, Lang Lang, Victoria. Includes construction of ride and handling test roads, high speed brake test roads and noise test roads. The photographs formed part of the working papers of Harold Ingamells, the Holden engineer involved with working with the contractors on the construction of the various tracks at the proving grounds.