Devil's Playground: The bonus vehicle for this map is the ATV1000. It is found in the northern part of the map next to a truck with a trailer. Watch the video below to show exact location.
Bryn Carreg Quarry: The bonus vehicle for this map is the MX650. It is found in the south-western region of the map leaning against a tree. The video for this map is below also.
Bonus: James Stewart's Compound: *This special vehicle is not needed for the trophy.* This special vehicle is the MX 50cc. This vehicle is found in between two garages.