Episode Title:The Best Heavy Vehicle.Episode Description:Hana sends Tayo on an errand to a construction site. There, Tayo meets heavy machinery and gets excited, making the vehicles bicker about who is cooler. They decide to hold a contest to settle the matter, with Tayo as their judge. However, Tayo gives them weird quizzes and embarrassing assignments to carry out. The last assignment, knocking down barrels with tires, leads to havoc.