When one of the tyres exploded , de Portago 's car slipped to the right .
When one of the tyres exploded , de Portago 's car crashed against a large crowd , killing nine people , as well as de Portago himself and American co-driver Edmund Nelson .
When one of the tyres exploded , de Portago 's car slipped to the right and crashed against a large crowd , killing nine people , as well as de Portago himself and American co-driver Edmund Nelson .