This cap is from 6x01 "Exile On Main St.".
Click to see the full-sized cap.
I believe this is the moment when not!Sam ('cause we didn't know he was soulless yet) turned down taking the Impala. We should've known something was up then. Dean doesn't simply turn over the keys to his beloved car to just anyone and you could practically feel the sting when Sam said no thanks.
Very happy to announce the return of my SPN Revealed series of posts for Season 2! You'll see the next one appear in about an hour (I love scheduled postings). Feels good to get back to these after a 3 year break. Hope you all enjoy this installment. :)
Have a good Tuesday folks. *hugs*