Driveshaft failures accounted for the EuroBruns of Stefano Modena and Oscar Larrauri ( Modena had two spins ) .
Modena had stalled his car at the start of the parade lap and had to start from the back of the grid .
Driveshaft failures accounted for the EuroBruns of Stefano Modena and Oscar Larrauri ( Modena , who had stalled his car at the start of the parade lap and had to start from the back of the grid , had two spins ) .