What is the title of Pixar's 2008 Cars short-film series starring Mater?

Pixar's 2008 Cars short-film series starring Mater is titled Mater's Tall Tales.

The series is part of Cars Toons, a collection of animated shorts centered on characters from the Cars universe. Each Mater's Tall Tales story presents an extravagant adventure that Mater claims to have experienced. Lightning McQueen often appears as a listener, and the stories become increasingly unlikely while Mater remains completely confident in them.

The title uses the traditional expression “tall tale,” meaning an exaggerated or highly improbable story. That format lets the shorts move through different genres, including racing, firefighting, rocketry, and espionage, without changing Mater's essential personality.

Mater's Tall Tales is not the title of a feature film. Cars Toons shorts were produced for television and home entertainment, and the broader Cars franchise also includes other short-form productions. The series helped expand Mater from a supporting character in Cars into one of Pixar's most prominent comic characters.