My Dad's a Train Driver.The Teletubbies listen to a Voice Trumpet recite a nursery rhyme called "Hark, Hark, The Dogs Do Bark", then they watch Becky go for a ride on a tram. Po's scooter is involved in an accident and the other Teletubbies are knocked down. There's time for the Twisty Dance before Tubby Bye-Bye.