one retirement for mechanical reasons and it won 6 races in 1979, three each for Villeneuve and Scheckter. Other solid placings helped Ferrari win its fourth Constructors' Championship in 5 seasons and Scheckter his only Drivers' Championship. Scheckter was given the 312T4 car he drove to his championship after the new 312T5 was ready to be debuted in Argentina in 1980. He still owns it, and ran it at the 2010 Bahrain Grand Prix weekend to celebrate the 60th anniversary of Formula One, along with every living Formula One world champion except for Nelson Piquet and Kimi Räikkönen. 312T5 The 1980 season saw further aerodynamic progress by Cosworth DFV teams, and a heavily updated version of the 312T4, the 312T5 was introduced at the start of the season. The Ferrari was totally outclassed as their wide 312 "Boxer" engine did not suit the aerodynamic needs. The car was unreliable, slow, and ineffective against the competition. The other constructors' cars got better throughout the season whereas the 312T5's development went virtually nowhere – the car became less and less competitive over the season. For the first time since 1973, Ferrari did not win a race for an entire season, and the team finished 10th in the Constructors' Championship. Scheckter even failed to qualify in Canada and, after only managing 2 points, retired from the sport at the end of the year. The 312T5 was succeeded by a completely new car, the 126CK, for the 1981 season. 312T6 The six-wheeled 312T6 used four tyres at the rear, specially developed for the purpose. It was one of a few six-wheeled designs during that period, although Tyrrell's P34 was the only example which raced. The car followed in the footsteps of the Tyrrell P34, but instead of four smaller front wheels, the T6 used 4 normal sized rear wheels on one rear axle. The car was tested by both Niki Lauda and Carlos Reutemann in 1977, but it never raced. Quite apart from the fact that it was far wider than the regulations permitted it also proved a challenge to drive. During one test session at Ferrari's Fiorano test track, Carlos Reutemann, on the 12th lap, crashed the car, which then burst into flames. On another occasion, it suffered a rear upright failure. Reutemann was not impressed with the 312T6. 312T8 Following the 312T6 experiment articles appeared in the Italian press with pictures and