"But you said if I drove you, I could hang out with you!"
Probably not actually named "Guy" but rather referred to that way by the Fashion Club.
"Guy" drove the Fashion Club to the Mall of the Millennium in the hopes of being able to hang out with the girls. He was, of course, not permitted to actually speak.
Due to a deal
Daria forced upon Quinn, "Guy" ended up driving Daria and
Jane home as well.