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
Kim Wall, whose body had been cut apart, is believed to have died while on a privately built submarine belonging to a Danish inventor.
Parts of Scotland and northern England will start the day with outbreaks of thundery rain before it slowly clears through the day.
The NSPCC has revealed that it dealt with nearly 19,500 calls and emails from concerned adults in the last year relating to child neglect.