Marussia Formula 1 test driver Maria de Villota suffered 'life-threatening injuries' in her accident that took place at Duxford airfield on Tuesday, according to the local ambulance service.
The Spaniard collided with the back of a team transporter as she returned to the pits following her first straight-line run.
Medical personnel were called to the airfield to attend to de Villota, who was swiftly transported to a nearby hospital by road.
A statement issued by the East of England Ambulance Service said it received an emergency call at 9.17am, and dispatched an ambulance and specialist medical crew to the scene.
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 Magpas air ambulance charity, which attended the accident, said after returning from the hospital that de Villota was in a "stable" condition having suffered injuries to her head and face.
Marussia has said that it will release a further statement about de Villota's medical condition once details are known.