IMOLA, ITALY - APRIL 23: Ayrton Senna, McLaren MP4-5 Honda, leads Alain Prost, McLaren MP4-5 Honda during the San Marino GP at Imola on April 23, 1989 in Imola, Italy. (Photo by Ercole Colombo / Studio Colombo/Getty Images)
IMOLA, ITALY - APRIL 23: Ayrton Senna, McLaren MP4-5 Honda, leads Alain Prost, McLaren MP4-5 Honda during the San Marino GP at Imola on April 23, 1989 in Imola, Italy. (Photo by Ercole Colombo / Studio Colombo/Getty Images)