How on earth could anyone have actually planned this fatal accident? No one in advance could possibly have known what route the driver would take, that Diana would fail to wear a seat belt, that the driver, who was apparently not on duty that night as they hadn't planned to go anywhere, was drunk. Dodi apparently insisted that he drove when the plan, for some weird reason, changed, driver should have refused but no one said NO to Dodi! Her security officer was the only one wearing a seat belt and that's how he survived. Why the others weren't is a complete mystery. Had Diana done so, she would in all probability survived. I think murder would have to have had a more cast iron plan than an off the cuff midnight car ride!