<Tr> <Td> ← Previous "Fun Run" </Td> <Td> Next → "Launch Party" </Td> </Tr> <Tr> <Td_colspan="2"> The Office (U.S. season 4) List of The Office (U.S. TV series) episodes </Td> </Tr> <P> "Dunder Mifflin Infinity" is the third and fourth episode of the fourth season of the American comedy television series The Office, and the show's fifty - sixth and fifty - seventh episode overall . The episode was written by Michael Schur, who also acts in the show, and directed by Craig Zisk . It first aired in the United States on October 4, 2007 on NBC . </P> <P> In this episode, Ryan returns to his old office and reveals his plan to bring technology to Dunder Mifflin . Michael and Dwight try to prove that the personal touch is better than technology . Meanwhile, Jim and Pam reveal their relationship to the rest of the office, Kelly attempts to reunite with Ryan, and Dwight and Angela's relationship continues to plummet . </P>

Episode of the office where michael drives into the lake