The movie Rush: Lincolnshire mechanic's starring role in James Hunt and Niki Lauda film
As his speed hits 100pmh, the masked driver slams his foot to the floor and manoeuvres his sleek racer between two other cars, with just inches to spare on either side.
While those watching from the sidelines hold their breath in anticipation, a voice from the crowd yells "cut".
"Again," the voice adds. "But this time faster. And closer."
The voice is none other than acclaimed Hollywood director Ron Howard.
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The driver he is speaking to is 65-year-old Coleby mechanic John Counsell.
Mr Counsell has a starring role in Howard's latest blockbuster Rush, which hits cinemas across the country on Friday, September 13.
The film tells the tale of the fierce rivalry between James Hunt and Niki Lauda and is set in the 1976 Formula One season.
Mr Counsell drove his March 703 car between Hunt and Lauda's cars for a fast and furious crash scene shot at Cadwell Park, depicting a 1970 Formula 3 race at London's Crystal Palace.
Then director Ron Howard – the former Happy Days star who filmed scenes for The Da Vinci Code in Lincoln – wanted it done all again but much faster and closer.
Mr Counsell, who spent his working life in the motor trade, learned the tricks of the track at the Jim Russell Racing School in Canada and he later became an instructor.
He said: "The film is loosely based on the truth and a mock crash was filmed at Cadwell Park based on a Formula 3 race at Crystal Palace when, allegedly, Hunt and Lauda came together and crashed.
"During filming the cars were nose to nose and I had to drive through the middle at umpteen miles per hour in my car, which is white with a red nose and a number 25 on the side.
"Then Ron Howard said, 'Do it again with more miles per hour and the cars closer together'.
"I was one of the lucky ones to be chosen from the Historic Sports Car Club and we did three days at Crystal Palace and four days at Cadwell Park. We'd be doing something and Ron would tell us to stop and do it again even if we were just pushing a car.
"It was absolutely brilliant taking part and what a super chap Ron Howard is – so interested and interesting."
Mr Counsell first met the playboy racing driver himself in 1969.
"I knew James Hunt from when I started helping out with racing cars and hanging around at race meetings at tracks including Cadwell Park and Mallory Park in Leicestershire.
"I thought if he could do it then so could I. He was slightly arrogant but that was his character – those guys were totally focused on where they were going – and he was very approachable.
"James Hunt really caught the public's imagination.
"I think that because of Lord Hesketh's sponsorship it was all very flamboyant with helicopters and the rest.
"Apparently, Ron Howard was looking to do a film about Jackie Stewart but with James Hunt there was no shortage of controversy."
The movie, starring Chris Hemsworth as Hunt and Daniel Bruhl as Lauda, also recreates the famous crash at the 1976 German Grand Prix at the Nürburgring in which Lauda suffered horrific burns. Lauda then makes a comeback to face Hunt in the 1976 World Championship in Japan.
Mr Counsell said: "The cars back in the 1970s were not safe. If you had an accident, it kind of hurt and you were probably sat on 70 gallons of fuel.
"I think that to race a modern-day Grand Prix racing car you have to be a something of a computer whizz-kid."
Rush opens in cinemas on September 13.