After previous attempts to create a film version of The Simpsons had failed due to script length and lack of staff, production began in 2001. Numerous plot ideas were conceived by the writers, with Matt Groening's being developed into the film. The script was re-written one hundred times, continuing even after animation had begun. This meant that "two films' worth" of finished material was cut, including cameos from Isla Fisher, Minnie Driver and Erin Brockovich. Tie-in promotions were made with 7-Eleven, who transformed their stores into Kwik-E-Marts, and other companies such as Burger King. The film premiered in Springfield, Vermont, who had won the right to hold it through a Fox competition.