An architect from Essex is hoping to make history by becoming the fastest person in the world - on a bicycle.
Neil Campbell from Colchester is hoping to beat the current record which stands at an astonishing 167 miles an hour.
He's going to make his record-breaking attempt in August but this week he's been training on a disused runway at Elvington near York.
Neil is already the fastest cyclist in Europe, but now he wants to the world title.
He rides a custom-silver Silver Eagle which has a stopping parachute to assist with breaking from 170mph to 0 in 400 metres.
Neil will be pulled along by a Porsche and then released at high speed.
He will then have to pedal furiously as he is timed over a 200m time trap.
Watch Sarah Clarke's ITV report here
"We've done 149 mile an hour so from there we need to get another 17, 18 miles an hour to get the world record.
There's an awful lot of things that can go wrong - from the very first, initial tow off the line, to catching a little bit of uneven surface - and obviously I'm punching the back of the car at 150 miles an hour so if the car shifts or gets a little bit of crosswind, I feel it. So all of that has the potential risk of catastrophe, really."