 First announced at the 2011 San Diego Comic @-@ Con International by series showrunners Steve Callaghan and Mark Hentemann , the episode was written by Gary Janetti . Janetti joined the series in its first season , writing " Brian : Portrait of a Dog " , as well as the series 's landmark 150th episode " Brian & Stewie " . It was directed by Julius Wu , who joined the show in its fifth season , directing " The Tan Aquatic with Steve Zissou " . Series regulars Peter Shin and James Purdum served as supervising director , with Andrew Goldberg , Alex Carter , Spencer Porter , Anthony Blasucci , Mike Desilets and Deepak Sethi serving as staff writers for the episode . Composer Ron Jones , who has worked on the series since its inception , returned to compose the music for " Stewie Goes for a Drive " . An announcement of Reynolds ' appearance in the episode was made at the Television Critics Association 's summer press tour , along with several other guest voice actors for the season . 
