S02E94: Peabody's Improbable History - Peter Cooper/Race of Tom Thumb

Mr. Peabody and Sherman travel back in time to meet Peter Cooper, the inventor of the Tom Thumb locomotive. They join Cooper in a race, but it becomes apparent that the event is being fixed, and Cooper's ignorance complicates matters. Throughout the episode, Mr. Peabody must navigate the challenges of the fixed race while trying to help Cooper win with his train.