Davide Valsecchi has escaped serious injury in his 175mph GP2 qualifying crash at Istanbul Park in Turkey today.
The Italian was on his final lap of the session when he suffered an apparent brake failure for the left-hander at the end of the back straight, Turn 12.
GP2 cars have been recorded with a top speed approaching 175mph before the braking point for the corner.
Pole position man Giorgio Pantano was right behind Valsecchi when he crashed. He said: "I was braking, and he was maybe 10-metres in front of me, and the car just went straight on. Maybe he lost the brakes or something, he just went out in front of me, very fast."
Valsecchi's Durango team have confirmed that he was complaining of back pain, as TV footage showed him waving his hands around in the cockpit in the aftermath of the accident.
He has not broken any bones after initial examinations, but he will definitely not play any further active part in the race weekend.