Cars 2: World Grand Prix Read and Race was a mobile game made by Disney Digital Books on July 27th, 2011. The game told the story of Cars 2 focusing only on the World Grand Prix races, after the player was done reading, they could customize their 5 race cars and race in a World Grand Prix race with several other World Grand Prix racers. The game disappeared from the App Store in mid-2020 and most of the game's .apk require the game data to work.
Currently, .ipa files of some versions of the game have been found thanks to Alex! https://archive.org/download/ELRASHOMACUINWASHERE/Cars%202%20World%20Grand%20Prix%20Read%20and%20Race/. There are no .apk files that work.