Veteran Australian motor racing driver Mark Webber was injured in a high-speed crash with another vehicle at the Six Hours of Sao Paulo event on Sunday.
Webber, racing for Porsche in the World Endurance Championship after quitting Formula One last season, was stretchered off the Interlagos circuit after his car collided with the Ferrari of Matteo Cressoni.
"Cressoni was checked by the medical staff at the side of the track and cleared, while Mark Webber, who was awake and alert, was taken to the circuit medical centre for further examination," said a statement from the organisers.
Webber, 38, gave a thumbs-up to the crowd as he was taken to the medical centre although there was no immediate word of his condition. The race was won by the Porsche of Neel Jani.