What Truck Is Mater Based on From the 'Cars' Movies?

The movie 'Cars' has become a very popular children's movie. The beloved character Mater stole the hearts of many. But what inspired this comical southern truck.
Mater stole the hearts of millions with his southern accent and comedic natures. But what vehicle inspired this character?

Disney Cars Disney/Pixar Cars Tow Truckin' Mater Vehicle

Truck Mater Stock Photos - Free & Royalty-Free Stock Photos from Dreamstime

Tow Mater - Wikipedia

Tow Truck Mater from movie Cars Stock Photo - Alamy

Disney/Pixar Cars 3 Transforming Mater Playset

Pixar Animation Studios

Someone Is Selling This Incredibly Detailed 'Mater' Tow Truck Replica for $50,000

Disney Pixar Cars Color Changers Mater

Disney Pixar Cars Die-Cast Character Cars, 1:55 Scale Collectible Movie Vehicles, Gift for Kids & Fans Ages 3 Years Old & Up., Inspired by favorite

Disney/Pixar Cars 3 Mater Vehicle

The 10 weirdest things in the Cars universe revealed in Cars on the Road - Polygon