"Baby Not on Board" is the fourth episode in the seventh season of the American animated television series Family Guy. It originally aired on the Fox network in the United States on November 2, 2008. The episode features Stewie (voiced by Seth MacFarlane) after he is accidentally left at home when the Griffins head for the Grand Canyon. The family soon notice his absence, and they rush home; however, Peter (also voiced by MacFarlane) makes it more difficult for his family because of his immature behavior. Meanwhile, Stewie realizes how much he depends on his family while he is alone. The episode was written by Mark Hentemann and directed by Julius Wu. It received mixed reviews from critics for its storyline and cultural references. According to Nielsen ratings, it was viewed in 9.97 million homes in its original airing. The episode featured a guest performance by Jon Benjamin, along with several recurring guest voice actors for the series. "Baby Not on Board" was released on DVD along with eight other episodes from the season on June 16, 2009. Plot Peter visits the Quahog Mini-Mart where Chris works after a visit to the local spa. After he threatens to sue the store for Chris' "sexual remarks", Peter is given an unlimited gas coupon for a year by Carl. Peter begins to take advantage of the card, even taking a trip into space, until Lois suggests that the family travel to the Grand Canyon. They leave early the next morning but inadvertently leave Stewie behind at home, only realizing that when they visit the site of 9/11. They first contact Joe but cannot get a hold of him. They then contact Cleveland and Quagmire to look after Stewie. After not receiving any calls from either of them, Lois insists that the family return home to Stewie. While driving the car, Peter somehow enters the car next to them, causing the Griffins' car to crash. When the family attempts to ride a train home, Peter spends the last of the money that they saved on curtain rings. Lois is furious and blames all their misfortunes on Peter's stupidity, only to feel ashamed when he informs her that everyone else respects him for who he is. Eventually, Brian is able to get the family a ride in a pickup truck bound for Quahog. Meanwhile, Stewie finds out that he has been left alone, and