What is the title of the Pixar short film featuring Mater as a time-traveling medieval knight?

Time Travel Mater is the Pixar short film featuring Mater as a time-traveling medieval knight.

The short is part of the Cars Toons series, which centers on exaggerated stories told by Mater. In Time Travel Mater, Mater travels through time and encounters a medieval setting, where his familiar personality is placed into a playful fantasy adventure.

Cars Toons shorts are generally much shorter and more comedic than the feature films. They often use unreliable storytelling, with Mater presenting extraordinary events as though they really happened. This format lets Pixar explore historical, musical, and action themes without changing the continuity of the main Cars films.

The title is sometimes mixed up with other Mater shorts, including Mater the Greater, Heavy Metal Mater, and Rescue Squad Mater. Those episodes also use unusual situations, but none has the same time-travel premise.