Mexican GP: Ayrton Senna, McLaren MP4-5 Honda, leads Nigel Mansell, Ferrari 640, Gerhard Berger, Ferrari 640, and Alain Prost, McLaren MP4-5 Honda, at the head of the field.
Ayrton Senna, McLaren MP4-5 Honda, leads Nigel Mansell, Ferrari 640, Gerhard Berger, Ferrari 640, and Alain Prost, McLaren MP4-5 Honda, at the head of the field.