S1·E66 All about cars

Title number 0066. Opens with Mister Rogers arriving with a bag of toy cars. Mr. Rogers explains how all toys do what you want them to do. His son, John, also makes his first appearance on the show to play with model antique cars. Meanwhile, at the Neighborhood of Make-Believe, Corny's newly rebuilt factory offers to help Mime Jewel Walker in his go-cart play-act.