England and Liverpool footballer Joe Cole has been warned he could lose his driving licence after being found guilty of speeding at 105mph.
He was caught driving his Audi A4 on a 70mph section of dual carriageway in Claygate, Surrey, in November 2009.
Cole, 28, who did not attend court in Staines, had denied the charge.
District Judge Clive Wiles adjourned sentencing until 27 August but warned Cole, who already has six points on his licence, he could be disqualified.
Dean George, representing the former West Ham and Chelsea midfielder, claimed in court the speed gun had not been used correctly, producing an inaccurate reading.
Andrew Mitchell, who has since retired from Surrey Police, used the laser speed gun that recorded the incident on 19 November last year - when Cole, who was a member of England's World Cup squad, was still playing for Chelsea.
He told the court he had seen the car being driven towards him on the A3 Esher bypass at 1255 GMT that day.
He said: "I estimated it to be in excess of the 70mph speed limit. My estimate was confirmed when the laser, when shone on the vehicle, recorded a speed of 105mph."
The court was shown a recording of the incident which showed Cole apparently smiling as he passed the police officer.
Cole, whose address was given as Chelsea, London, was not pulled over but was sent a notice of the speeding offence in the post by Surrey Police.
Mr George claimed the police officer who recorded Cole's speed had failed to follow the guidelines in the handbook provided with the laser gun. He said the device was moving when it registered Cole's vehicle, making the reading "unreliable".
But the judge rejected the argument, saying the officer had checked the device was working before using it.
Cole, who was sent off in his Liverpool league debut on Sunday, will have to pay £600 costs.