Manthrak's Malicious Steamroller

From publisher blurb: After an experiment with a teapot goes wrong, a wizard's tower rolls through the forest, crushing all beneath it. Its owner, Manthrak the Meticulous wants it back. It's up to you and your companions to stop the tower's rampage before something even worse happens. Manthrak’s Malicious Steamroller is a short, high-octane one-shot adventure module for a party of four or five 4th level characters. With no setting specific details, it can be easily dropped into any campaign, or run on by itself for an action-packed escapade.