Cambus - an interesting theory. I did not know about his Algerian mother , nor his invovement with the French Intelligence. But if he was prepared to sacrifice himself why would he not just have driven straight into the pillar?
This is a serious question and I am interested to hear your opinion. I have always thought it was too convenient for the Establishment, Royals etc. And there was no way they would put up with Diana joining the Al Fayeds. But I dont think that we wil ever really know one way or the other.