Charles B. Pierce with Eastwood, who liked the story and helped Pierce develop it into "Sudden Impact" (1983), the fourth entry in Eastwood's Dirty Harry film series. Pierce was given a writer's credit for the story along with Joseph C. Stinson. Pierce is said to have written the phrase, "Go ahead, make my day," the film's most famous line, which went on to be identified as one of the ten best movie quotes of all-time by the American Film Institute. The phrase was inspired by something his father once told Pierce in his youth while encouraging his son to mow the lawn: "When
Go-Ahead London subsidiary, London General, which had been sold in 1994 to a management buy out. These two companies subsequently developed in much the same way, both establishing a livery of red with a charcoal skirt and yellow relief band, and splitting orders for new buses. Further expansion did not occur until September 2006, when Docklands Buses was purchased. On 29 June 2007, the Go-Ahead purchased Blue Triangle. With these purchases, Go-Ahead surpassed Arriva London to become the largest operator of buses in London, running around 16% of London bus services. A corporate image for Go-Ahead's London bus services started to appear