The confusion typically stems from two other related titles that did have handheld or karting connections: LittleBigPlanet PSP (2009)
I understand you're looking for content related to "Little Big Planet Karting PSP ISO Download." However, I must inform you that downloading copyrighted ISO files for PSP games, including Little Big Planet Karting , without owning the original disc is generally illegal in most jurisdictions and violates the terms of service of platforms like Sony's PlayStation Network. Little Big Planet Karting Psp Iso Download