The third graffiti is also on the junkyard inside the old pickup truck which Chloe want to fix. After you have repaired the battery and have improved the interior of the truck, Chloe puts in the truck for a break and receives a call.
After this call and
BEFORE you smoke a cigarette turn the camera slightly left and the option for the third graffiti appears.
00:08 - Optional Graffiti #1 (Stagehandwriting)
00:44 - Optional Graffiti #2 (Radical Piratical)
01:39 - Optional Graffiti #3 (Feels on Wheels)02:17 - Optional Graffiti #4 (Canon Wall)
02:45 - Optional Graffiti #5 (Wishlist)
03:23 - Optional Graffiti #7 (Tread Harshly)
03:53 - Optional Graffiti #6 (Friendly Forest Friends)
07:12 - Optional Graffiti #8 (Permanent Record)
08:38 - Optional Graffiti #9 (Vanity Fare)
09:21 - Optional Graffiti #10 (Creature Feature)