Trivia: The Pizza Planet truck is visible cheering on the right side of the track at the World Grand Prix in Radiator Springs at the end of the movie. (01:37:45)
Trivia: On any poster with the Globe, to the left of the Cars 2 sign there is an island the shape of Finn in the Caribbean. There are also lands in the shape of cars elsewhere - Mater in Canada and Lightning McQueen in the UK.
Answer: They heard him recording the message to Finn and found his words suspicious.