Maria de Villota, a test driver for the Marussia F1 team, was rushed to hospital with life-threatening injuries after her car collided with a lorry at Duxford Airfield this morning.
East of England Ambulance Service spokesman Gary Sanderson said:
A woman has sustained life threatening injuries and following treatment at the scene by paramedics, she has been taken to Addenbrookes Hospital for further care.
The accident is said to have happened at low speed after Villota pulled off the track following a lap during which she reached speeds of about 200mph.
More top news
Very windy with gales possible
Strong performance from world number 100 meant Great Britain very nearly dominated day one of the competition.
As a promotion Black Friday is flawed. While it whips up demand and redistributes it the event doesn't obviously generate additional sales.