006 was built for Cevert to replace chassis 002, while the existing 005 was retained by Stewart for the final races of 1972. Stewart continued to use 005 for the first two races of 1973 while 006/2 was in construction and took 006 to the model's first win, at the 1973 South African Grand Prix. On the completion of 006/2, 005 was reduced to testing duties and was often seen in practice sessions adorned with experimental and copy-cat parts. The drivers retained their respective chassis for the majority of the remaining 1973 races, Stewart scoring five victories on his way to the Drivers' Championship title. Cevert also took several podium finishes, but the season was closely fought and Tyrrell (82 points) were beaten to the Constructors' title by Lotus (92pts). Cevert damaged 006 in a collision during the Canadian Grand Prix, and a new chassis, 006/3 was built up for his use in the following race. It was in 006/3's only ever appearance that Cevert was fatally injured, when he crashed during practice for the final race of the season: the 1973 United States Grand Prix. After Cevert's accident a devastated Stewart drove 006/2 around the Watkins Glen circuit once more, in an attempt to understand what had happened to Cevert, parked the car and then walked away from Formula One.