SSN just spoke with a reporter who was at the test. She stated that the car Was on the way back into the pits when the cars front wheels locked and she collided with the teams truck. She remained in the car for at least 20 mins after the collision and at that point reporters were asked to leave

mm by the sound of things some SERIOUS questions will be asked about what a truck was doing exposed from the track like that.

The truck was not on the track. She had already done her run and was going back to the pits. No one would expect something like this to happen.

the MR-01. Whose chasis is that?

Press Association

"The front of the Marussia car was destroyed in the crash and De Villota's helmet was seen to impact with the side of the truck.
De Villota was reportedly motionless for around 15 minutes as paramedics attended to her but was seen to move her hands before being transported to hospital"

This sounds very much like the cars anti stall system engaged at the end of the run. Inexperienced drivers having their first runs in a F1 car can be caught out by this. As they slow to stop the car or make a low speed turn (for example into a garage) they lift off the throttle and let the revs drop. The ECU senses this and sets throttle to around 50% with the car still in first gear resulting in a sudden acceleration such as the one described.