An icon of rally racing's spectacular and dangerous Group B, the Sport Quattro S1 E2 was the final evolution of Audi's pioneering Quattro, which introduced all-wheel drive to the World Rally Championship (WRC) in 1981. The E2 (Evolution Two) is the product of Group B's loose regulations, which fostered a fierce development race between manufacturers, resulting in the introduction of extreme aerodynamics, anti-lag turbo systems, and dual-clutch transmissions that pushed the limits of performance and tested the limits of safety. In 1986 multiple Group B crashes resulted in the deaths of drivers and spectators, prompting a swift ban on Group B cars. The sport’s governing body, the FIA, introduced new regulations to improve safety, including better crowd control and more medical personnel, and replaced Group B cars with safer, production-based Group A cars. The vehicle on view is a test car that took victory in the 1985 Mänttä  200 Rally—a non-WRC event—driven by 1983 WRC champion Hannu Mikkola, before being retired for promotional use.