 Complete the following phrase:  Upon arriving in Europe on his own in early 1955, Brabham based himself in the UK, where he bought another Cooper to race in national events. His crowd-pleasing driving style initially betrayed his dirt track origins: as he put it, he took corners by using full steering lock and lots of throttle. Visits to the Cooper factory for parts led to a friendship with Charlie and John Cooper, who told the story that after many requests for a drive with the factory team, Brabham was given the keys to the transporter taking the cars to a race. Brabham soon seemed to merge into Cooper Cars: he was not an employee, but he started working at Cooper daily from the midpoint of the 1955 season building a Bobtail mid-engined sports car, intended for Formula One, the top category of single seater racing. He made his Grand Prix debut at the age of 29 driving the car at the 