The Knight BusTM from the Harry Potter series is here to rescue young wizards, witches and Muggles alike. This DIY wooden mechanical model bus is an exciting addition to the Ugears Harry Potter collection, and a very clever piece of engineering indeed. To create this triple-decker bus, with its unique features from the Wizarding World universe, our Ugears designers and engineers set themselves an ambitious goal: create a bus that can narrow and expand itself, and change speed when it does, just like in the movie Harry Potter and the Prisoner of Azkaban.