SPOILERS MAN !!!!!
Is that a spoiler? It's not even part of a mission, it's just the really mundane find X number of object Y as people obviously don't spend enough time in the real world hunting for their car keys and really want to spend hours doing it in a game with no reward apart from maybe a trophy/achievment at the end. Seriously, why do game makers still put this crap in games apart from to pad the game out? I think there's 6 "find X of Y" type things in this game, and that's not even including stunt jumps, knife flights, under the bridge etc!
Maybe I should create a game simply titled "Find your car keys"... or "Lost your marbles"?