Louis Renault’s aim was to associate the Nervasport name with extreme power and aerodynamics – and the rules for construction were simple: take the standard engine from the production line and have the body supported by a wooden frame and a standard chassis. The bodywork, however, was to be something else and required input from another sector. Marcel Riffard, an engineer and designer of Caudron-Renault aeroplanes, was given the job of designing the ideal shape. The skin was made of hammered sheet metal, and the single-seater was shaped like a rocket: a long bonnet, rounded at the front, with a tapered rear to improve aerodynamic performance to the max.