The family stop at a Native American casino as Peter need to use the bathroom , Lois quickly become addicted to gambling and lose the family car . After hearing that Lois have gambled the car away , Peter try to get it back by claiming to be Native American . The doubtful Indian elders demand that he go on a vision quest to prove his heritage . Chris accompany Peter into the wilderness , hoping to tell him that he only want to draw instead of being in the Scouts . Delirious from hunger , Peter begin talking to anthropomorphic trees and see a vision of his spiritual guide , Fonzie . After hearing Fonzie 's advice Peter finally listen to Chris 's complaints and realize his son is a talented artist .