This episode is an excellent following of the previous episode, and it might be even better than the first part. This episode has a slightly more interesting storyline.
The family was stuck in a traffic jam in the middle of the highway, and had to temporarity stop. At that time, Malcolm met a girl that he liked, and they spent the time of the traffic jam together. Meanwhile, Reese, who got overexerted in the heat, got crazy and was fighting the ice cream man. Lois also got exerted, and she was yelling and screaming at the construction workers. Meanwhile, Dewey, who was hopelessly lost (because he ran away from home in the previous episode), had many dangerous adventures before he finally went home.