Fiber Fuel is a healthy fuel made from wheat that was first seen in the film Cars. It helps cars run better when incorporated to their diets. Fiber Fuel sponsors a Piston Cup team, with racers Brush Curber and McCoy. This sponsor does not return in Cars 3; however the sponsor in the Disney Pixar cars die cast line in the NASCAR series sponsoring new racer Gogo Logano, the sponsor also appears in cars 3 as a bottle in Mater's junkyard and the logo also makes a cameo in the end credits.
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