Chuggington (2008)

S02E12 Snowstruck Wilson

The trainees are busy mastering their snowploughs, snow horns, and snow lanterns, but they haven't encountered actual snow yet. When a blizzard hits, it's time for all the chuggers to get to work! Wilson teams up with Harrison, vowing to stay right by his side. However, he gets sidetracked by some kids making a snowman and ends up trailing behind.