Don't Give Up

After realizing how hypocritical it is for her to drive a gas-guzzling car, Kat decides to convert her car to biodeisel fuel and enrolls in the autoshop class. The boys in the class bet on how quickly Kat will give up but she bets on herself. Chastity makes a deal with Bianca: if she helps Joey raise his chemistry grade so he can play football, Chastity will allow Bianca on the cheerleading squad. However, Bianca ends up encouraging Joey's modeling dreams instead, much to Chastity's annoyance. Meanwhile, Cameron tries to figure out how to get Bianca's attention.