Marcel Tiemann
Marcel Tiemann (born 19 March 1974) is a race driver from Germany. He is best known for being a five-time winner of the 24 Hours Nürburgring race with Opel and Porsche. Tiemann was born in Hamburg to Hans-Jürgen Tiemann, an amusement park owner (Heide Park), and also a successful race driver, winner of the 24 Hours Nürburgring in 1997 (BMW) and 1999 (Viper). Tiemann was seriously injured in a heavy crash during an International GT Open race at Imola on May 23, 2010. Tiemann, who was driving an Audi R8, collided with another car at the  rolling start and was forced into a retaining wall at high speed. He sustained brain trauma, a fractured vertebra and broken ribs in the impact, and was placed in a medically induced coma to assist his recovery. He later regained consciousness and mostly recovered, but has been unable to race due to the resulting neurological damage and vision problems from the accident.