International F3000 Championship: Heinz-Harald Frentzen (GER), Vortex Motorsport. International Formula 3000 Championship, Vallelunga, Italy. 14 April 1991.
Heinz-Harald Frentzen (GER), Vortex Motorsport.
International Formula 3000 Championship, Vallelunga, Italy. 14 April 1991.