What mistake was made?
The great racing driver, Sir Malcolm Campbell, was the first man to drive at 300 miles per hour. He set up a new record in September 1935 at Bonneville Salt Flats, Utah. Bluebird, the car he was driving, had been specillay built for him. It was over 300 feet in length and had a 2500- horsepower engine. Although Campbell reached a speed of over 304 miles per hour, he had great difficult in controlling the car because a tyre burst during the first run.After his attmpt, Campbell was disappointed to learn that his average speed had been 299 miles per hour.However,a few days later, he was told that a mistake had been made.His average speed had been 301miles per hour.Since that time, racing driver have reached speed over 600 miles per hour.Following in his father's footsteps many years later,Sir Macolm's son, Donald, also set up a world record.Like his father, he was driving a car called Bluebird.
Writen the text in here, I don't know useful or not? Because I wanted remember it.