|From the episode:||Whistle While Your Wife Works|
"Cars" is a 1979 pop music song by UK artist Gary Numan, and was released as a single from the album The Pleasure Principle.
Stewie Griffin sings a situationally-appropriate version of the song at the end of "Whistle While Your Wife Works" when he and Brian are leaving Jillian's apartment. He sings it while playing his mixtape, which was playing Numan's rendition.
♪♪Brian had sex...♪♪
♪♪with a really dumb girl...♪♪
♪♪now he's taking his friend Stewie...♪♪
♪♪to get some ice cream in his car.♪♪
- Brian turns off the the song
Stewie: Ohh, you're a poor sport.