Muddy Matters - S16.E15

James gets to take Farmer McCole's sheep to a festival, and finds himself needing to make the decision of going onto muddy tracks or risk the chance on old or alternative tracks. When he realises he is running late, he takes the chance and takes the easiest way through muddy tracks. The photographer takes the photo at the festival, stating that "that's a really useful engine" because James worked hard, even though he got muddy.