Carl Haas, from Chicago, was an Elva agent serving the midwest of the United States from the mid-1950s through the 1960s. Haas was invited to England to drive an Elva Mk III in the Tourist Trophy at Goodwood on 13 September 1958, where he finished twelfth overall. Also in that 23rd Tourist Trophy race was the new Mark IV model driven by Ian Burgess and Robbie Mackenzie-Low. Stuart Lewis-Evans drove the same works car, registered MBW 616, to fastest time of the day at the Bodiam Hill Climb in East Sussex on 11 October 1958. Tragically, Lewis-Evans lost his life just two weeks later through injuries sustained at the Moroccan Grand Prix.