http://www.bbc.co.uk/news/uk-england-cambridgeshire-18685789
An updated report.
This is what it says:
"A Formula 1 driver has suffered life-threatening injuries in a crash during testing in Cambridgeshire.
Maria de Villota was hurt while driving an MR-01 race car for the first time for the Oxfordshire-based Marussia team at Duxford airfield.
The car hit a Marussia support truck which had been used to transport it to the track.
The East of England Ambulance Service said the Spaniard, 32, had been taken to Addenbrooke's Hospital in Cambridge.
Emergency medical charity Magpas, which helped to treat Villota at the scene, said she had suffered "facial and head injuries" and was in a stable condition on her arrival at hospital.
BBC Cambridgeshire presenter Chris Mann, who witnessed the crash, said the car had completed a circuit when it "suddenly accelerated" into the back of the lorry.
"From where I was standing it looked like the helmet took the brunt of the impact," he said.
"Strangely, the car suddenly accelerated into the lorry and the car went careering into the side of the loading board."
He added: "There was a terrible moment when everyone was just very shocked by the impact and the suddenness of what had happened."
A Cambridgeshire police spokesman said: "We were notified by the ambulance service of a slow-speed crash involving a racing car and a lorry.
"It looks like the driver has suffered a serious injury and we will be notifying the Health and Safety Executive as it happened on private land.""