When Diggs starts treating everyday jobs on the construction site as a competition, Bozer decides to introduce a real contest - the Machine Challenge! / It's Maxine's 'mileage day'. Bozer enlists the help of the other machines to organize a Carnival Party to celebrate but it has to be a surprise because Maxine doesn't usually celebrate her Mileage Day and she doesn't like being made a fuss of.
—Anonymous