A woman has become the fastest human on a bicycle, reaching a speed of 183.9mph.
Denise Mueller-Korenek, 45, shattered a two-decade-old land speed cycling record which was previously held by a man.
Her incredible feat, which has yet to be officially verified by Guinness World Records, took place on the Bonneville Salt Flats in Utah.
She rode a custom-made bike that was attached to the the back of a drag racing car until she hit 100mph.
The bike was then released and she pedalled in the slipstream of the vehicle which was driven by Shea Holbrook, a female professional racing driver.
Mueller-Korenek eclipsed her own speed record for a female cyclist which had been 147mph, set in 2016.
She also shattered the existing male record of 167mph which has stood since 1995 and was set by Dutch cyclist Fred Rompelber.
After successfully slowing down and demounting she yelled out: "Beat that, Fred!"
Mueller-Korenek said: "I think we broke the limit of what we were supposed to do. That was rough."
The cyclist said she had been bounced around at the unprecedented speed.
Mueller-Korenek, an American, is a former champion competitive cyclist who retired early to start a family and run a home security business.
Holbrook, her driver, said: "It was the ride of her life and the drive of mine."
She added: "Where’s our margarita? We have the salt."
It would be the first time a woman has held the overall cycling land speed record.
The record stretches back to 1899 when cyclist Charlie Murphy used a steam train to help get him to 60mph.
It has been broken around 10 times over the last century, always by men.
Mueller-Korenek’s bike was set up so that each revolution of the pedals propelled her 128ft.
Bikes used in the Tour de France reach about 30ft per turn in high gear.
The new record has yet to be officially verified but is expected to be.
The 2019 Guinness Book of World Records, in pictures
A spokeswoman for Guinness World Records told The Daily Telegraph: "I can confirm that Denise’s impressive achievement has not been verified yet.
"We certainly welcome her to apply and submit this new feat for further review by our records management team.
"She is the current Guinness World Records title holder for the fastest bicycle speed in slipstream (female) for her feat in 2016."
Mueller-Korenek is a mother of three.
After getting off her bike she was hugged by her son Daniel, 18, who said: “Good job Mom.”
She said: “Now I know how Evel Knievel felt.”
Click Here: gold coast suns 2019 guernsey