The trio continued .
Two cars retired later on , ending Martin Brundle and Jean - Louis Schlesser 's involvement in proceedings , and leaving just the car piloted by Warwick and fellow F1 driver Jan Lammers to salvage third .
The trio continued but two cars retired later on , ending Martin Brundle and Jean - Louis Schlesser 's involvement in proceedings , and leaving just the car piloted by Warwick and fellow F1 driver Jan Lammers to salvage third .