The driver was drunk and thats why they crashed at 60 mile an hour
There was sum flash of sum sort of camera which was dne to dazzle the driver on purpose to make him crash
Mi5 or mi6 had an involvment in some way and planned to murder diana yearz before it happened
The car had been tampered with
Diana got involved with sum1 that was in with the wrng ppl and it was him that was ment to be killed nt diana