there's no time to find a different car. dean's already jimmied the lock, and there's practically a horde of demons coming after you all. the passenger's seat is blocked with boxes, and the back has a single available spot. this is something that sam didn't realize until he climbs in. he was paying more attention to making sure you were right behind him. sam sees you hesitate for a split second, but he takes your hand urgently. you’re still in danger.
“c’mon,” sam urges, hoping that you being in his lap doesn't make you uncomfortable. it's the best option for right now, though he's already unsure how he'll survive it. having you, the person he's been in love with for who knows how long, in his lap isn't going to be easy. all he'll be able to think about is having you there more. having you there again, maybe placing his hands on your hips or around your waist. but today he'll only do what you're okay with.