6. The Fiat
The mysterious Fiat Uno that traveled alongside the Mercedes Princess Diana was in continues to make people wonder. According to the investigation, the car had had contact with a white Fiat Uno that the authorities couldn’t find during their investigations. It is unclear just what role the contact between the two cars had in the accident. Theories point to the car belonging to the MI6 or to a photojournalist following Diana and her companion.