Sam could barely hear Dean's worried voice over the roar in his ears. He could only cling to the steering wheel, squeezing it as hard as he could. His eyes were distant, lost in a hallucination he couldn't snap himself out of. Losing Dean. Whether it was a hunt gone wrong, or suicide, or Dean just.. walking away, the end result was the same.

He was alone because he couldn't stop it.

You know that's how it's all going to end, Sammy. Dean's going to melt down and eat a bullet. Then you will, because you've never been strong enough to go it alone.

His voice was low, grating. "Drive. Just.. hn drive."