The power of the puppy eyes. :)
SAM: They’re in St. Louis. We’re goin’.
DEAN: Look, sorry ‘bout your buddy, okay? But this does not sound like our kind of problem.
SAM: It is our problem. They’re my friends.
DEAN: St. Louis is four hundred miles behind us, Sam. (They exchange a look. A minute later, they pull out of the gas station and start driving.)
edits by me