3D Studio, Vray, Photoshop and Zbrush.
Oh yes, it reminds me of home! Great work!!! 
very cool image!
but i`ll tell you something…
the rear-tire needs to be a little bit off… like moved or something…
and the window needs!!! to be open! hahaha!
and some blueish dust would add a nice touch… but,
i really like the image!
chem!
Thx a lot for the comment. I think you want the open window to imply that someone escaped through it huh 
? Nice idea.
In the meantime i did another image which fits the dark mood :
" Have you seen my teddy ?"
The “little sister” (played Bioshock ) was done as ultra-quick-sketch with zspheres.