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The new concrete mixer at school, Concrete Pete, makes up big stories, but really just wants to be impressive.
A game of capture the flag helps the gang encourage the sad sack Forbie the Forklift find his self-worth.
The tough substitute teacher, Mrs. Halftrack, whips the gang into proper shape with military precision.
A TV show comes looking for a special truck to feature and ends up choosing Pony for her selflessness.