In Pixar’s Cars 2, Mater is recruited into the spy organization C.H.R.O.M.E.
Mater becomes involved in the espionage plot after Finn McMissile and Holley Shiftwell mistake him for an American agent. C.H.R.O.M.E. is the agency connected with the film’s international spy activity, while Mater’s accidental involvement drives much of the comedy.
The story moves through Tokyo, Porto Corsa, and London as the World Grand Prix becomes linked to a larger plan involving Allinol fuel and hidden villains. Mater’s lack of formal spy training is part of the joke, but his observations eventually prove useful.
C.H.R.O.M.E. is easy to overlook because the film emphasizes character names and action scenes more than the agency’s acronym. It should also be distinguished from the World Grand Prix, which is the racing event at the center of the public-facing plot.