Mater and the Ghostlight is a 2006 American computer-animated short film released as a special feature on the DVD of Pixar's film Cars, which was released in the United States on November 7, 2006. The short, set in the Cars world, tells a story of Mater being haunted by a mysterious blue light.

Plot

Mater has been pranking the other residents of Radiator Springs by moving Red's flowers, bursting out from a pile of tires built to resemble the Colosseum to startle Guido and Luigi, dressing up as a cone vampire to scare Sally, attempting to scare Lizzie while she is sleeping which is unsuccessful, moving Fillmore's gas cans back outside while he takes them in and scaring Lightning McQueen when he believes Mater is hiding behind a pile of cans ready to jump out (what was really behind the pile of cans was one of Mater's signs). Afterwards, Mater teases Lightning as if he had seen "the Ghostlight," a Route 66 urban legend.