I think whatever caused the accident, and I am only guessing that it was! an accident, let's face it if we were being chased like they were down a tunnel with all the paparazzi etc..perhaps we wouldn't be as focused on our driving..if you think of the accidents that happen when police and emergency services are responding to an incident, they too have many any accident as they are traveling so fast! and they are meant to be experienced drivers. I'm sure it would be very difficult to "stage" an accident like that and to make sure you kill! the people that you intended to, it was an horrific crash from what the general public saw of the after math, personally I really couldn't see how something like that could be staged. and like others have said..there were many other ways that either of them could have been killed,with much more certainty of the outcome.At the end of the day she was a human being that must have suffered terribly in that dreadfull crash and goodness know what was going through her mind in them minutes .