"You have that whole broody, scowly thing going for ya." Heee!
Grumpy!Jen is hot! lol

Jensen tosses his head back with a groan, pressing his eyes closed as he empties into Jared's mouth. He can feel Jared trying to drink him down, trying hard not to miss another drop and it makes the shocks shooting through his body that much stronger. He looks down in time to see small streams of white leaking from between Jared's lips, warmth hitting him as it pools on his skin. His knuckles are white from where they're still fisting Jared's hair, and he releases it quickly. GUH!!!

Mmmmmm, car!sex FTW! This fic is sizzlin' hot, I can't even...*thudthudthud* You made me very happy in my pants, dude!

The squelching from the suction and slide of lips on dick, echoes in the car, mixed in with Jensen's moans and muttered swears. The inside of the windows are beginning to fog, air starting to cool as the sun slips further behind the mountains. It's dark enough that Jensen can make out the faint blink of the lights as they reflect of a nearby tree.
And I think description-wise this part is totally amazing, painting such a vivid picture with words, almost like being there in person (I wish lol).