woohoo! I loved this show as a kid! I actually have SawBoss staring at me whenever I go into my closet! :)
Someone once put up a (likely fake) internal cross-section of one of the Cars, with metal, gears and a bit of flesh, and all I could think of were the cars that run on blood (Blood Drive) and Sawboss from Jayce & The Wheeled Warriors.
counterpoint: sawboss is pretty badass