A leak in the rear braking circuit was apparently the reason for a lack of braking power, so when she was approaching Turn 8 from a top speed of 260 km/h she had to apply more and more pressure on the brake pedal. It appears that doing so not only the braking power at the rear was reduced by the leak, but probably she also pressed in some way the accelerator pedal. At that point, with the front tires completely blocked (as the front circuit was apparently fine) and the rear tires still turning she had no control of the car which smashed against the ARMCO barriers at the end of the straight.
The cameraman who was positioned in that area was hit by his own camera, resulting in a suspected broken nose. On the other hand he was definitely luckier than Natacha Gachnang who has already been operated because of a double compound fracture at her right leg.
It is very unfortunate to start this important season this way, but once again we know we can rely on safe cars and circuits.
You can watch the video of the accident, waiting for the championship race to start in a few hours.