A Porsche driver who overtook a group of learner motorcyclists at 113mph has been banned from the roads for six months.
David Robert Judd, 30, was found guilty of careless driving and admitted speeding on the A631 at Willingham Woods, near Market Rasen, on May 13.
Lincoln Magistrates' Court heard that seconds after passing the bikes he decelerated to 23mph after spotting a speed camera van.
Judd was fined £600, with £200 costs and a £15 surcharge.
The court heard he referred to himself in police interview as an idiot when his overtaking manoeuvre was put to him.
Judd insisted he was not showing off to anyone.
Magistrates heard his car had previously been under-performing, and performed faster than it used to after an engine fault was fixed.
Judd conceded that as he overtook, the car was travelling "faster than he realised".
The Doncaster man had denied a charge of dangerous driving.
Magistrates were not satisfied his driving fell far below the expected standard to be considered dangerous.
Judd's lawyer Steve Smith argued his client was past the picnic area when he overtook, there was a "nice" overtaking gap between the car and the bikes, and a safe distance between the vehicles when he braked.
Mr Smith added that at no point did Judd lose control of his car, attributing a "slight veer" after braking to a technical fault with the braking system.