Summary: Story based on the gif from "Baby" of Dean getting comfy in the front seat of Baby
They had been driving for hours and they were both dead tired, she was in the passenger side nodding off because Sam had jacked another car to track down a different lead on the case they were currently working.
"Son of a bitch," Dean said out of nowhere, breaking the silence, "I'm tired."
"Why don't you just pull over for the night?" she asked.
"Yeah, I think I just might," Dean replied.
So, they found a dense part of the forest that they were passing, drove in far enough away from the road so that no one could see them and Dean killed the engine.
"Front or back?" she asked Dean.
"You take the back; there is more room back there. I'll take the front." he replied.
"Are you sure?"
He nodded and so she opened her door, got out and went into the back of Baby. Dean lay down across the front seats and was asleep instantly. She however took longer to fall asleep. She sat up on her elbow and watched as Dean wiggled around to try and find a comfy spot. All that wiggling had her mind going in a different direction than sleep and before she knew it, she was leaning over the front seat and undoing his belt and then popping the button. She waited to see if Dean awoke but he didn't, so she slowly pulled the zipper down and slipped her hand in his jeans and began to rub his cock and that woke him up.
He looked at her but she didn't say anything, she placed a finger over his lips and then climbed over the front seat and settled herself on Dean's lap. She leaned forward and starting kissing Dean with so much passion, that it took his breath away; that was something he rarely experienced. She moved to kiss his neck and with her right hand, she slipped it back into Dean's jeans and took up rubbing his cock again, he was getting harder and she was getting wetter.
It was cramped in Baby but Dean managed to get her pants and panties off and she managed to pull his cock out and glide it in her. Soon they began rocking with each other, their breathing was fogging up the windows in Baby and the only sounds were that of their bodies making contact and their labored breathing. Dean could tell that she was getting close and he began to rub her sensitive bundle of nerves and it didn't take long for her to come screaming his name. A few thrust later and Dean was coming hard as well screaming her name. She collapsed on top of him breathing heavy and when she could talk again she whispered, "Good night Dean" and fall asleep wrapped in her love's arms.