I often encountered the same spooky issues when cruising the junk yards back in high school for parts for my or my pals' cars - alot of hair stuck in shattered windshields, blood on seats and carpet, and etc. (it gets worse, won't go into detail) coupled with the obvious personal items that put a human face and story on a life interrupted. Stacks and stacks of cars with a hurt-filled story to tell.
Never let it spook me out of the door or shifter console or whatever part I was after though, I was pretty bold and cold back in the day, at least that was what I wanted everyone to believe . . . now, after having been through a few "holy crap look at that car the guy must have died" wrecks myself, and having lost friends and family through that sort of thing, my outlook is somewhat different.