"You have got to be kidding me."
Dean's hand slapped down on the horn and held there. Sam, in the passenger seat, said nothing. He didn't even roll his eyes as he would have usually. Instead, he sat there stock still and entirely motionless. Part of him wanted to crawl into a hole and die while the other half wanted to run away and keep going. He didn't want to be with Dean in the car during a several hour long traffic jam. Not after their serious discussion in the hospital parking lot that had resulted in an all-night drive. No, he was definitely uneasy and frankly terrified.
"Dammit, c'mon! Move!" Dean complained with his hand affixed to the the while, Sam kept his eyes closed and wished for solace of a cheap motel.