Felipe Nasr and Susie Wolff escaped unscathed from an accident during the first day of Formula One testing in Barcelona.
The duo made contact on the entry to Turn 5 less than an hour into the afternoon session when Nasr tried to pass Wolff, who was on a slow lap.
The Brazilian appeared to clip the Williams' left front wheel, sending both cars into the gravel.
Nasr's Sauber was heavily damaged after apparently making contact with the barriers, losing one of its rear wheels and the rear wing.
Brazilian rookie Nasr had set the pace in the morning session, and both drivers had been the busiest today so far. Wolff had covered 83 laps and Nasr 68.
The teams were assessing the damage to the cars, but it is unlikely they will run again today.