A Swiss driver used his mobile phone to record himself driving near Geneva at 320km/h, nearly three times the speed limit.
The offence was only uncovered six months later when the driver was questioned in another case and investigators found the images still on the phone.
Some images were focused on the speedometer of his car, a Bentley Continental, revealing his law-breaking speed.
Others showed the road, revealing where he was, while the phone recorded the date and the time - just before 3:30am.
Police said the driver probably took the shots to impress his friends.
His licence was confiscated and he is free on bail awaiting trial.
