"Cas, something weird has happened," Dean said. He looked over at Impala, who had sat on the edge of Dean's bed with her legs crossed.

Cas approached the woman and inspected her. "She seems fine to me," he said, his brow furrowing. "Her nose is a little crooked, I admit-"

"What?" Dean interrupted. "No, Cas. She's the Impala."

Cas looked at the woman again, his head cocked. "Okay."

Dean blinked. Twice. "Okay?"

Cas turned to Sam for reassurance. "Was that an incorrect response?" A confused look fell upon the brothers' faces.

"The correct response is 'What the hell, man'!" Dean almost yelled. He was struggling to keep his cool. "Cars don't turn into people. No one and nothing turns cars into people!"

"Dean, I have a war going on in Heaven." Cas' face hardened and an authoritative tone that Dean wasn't used to enveloped his voice. "There is an army of angels up there waiting for my next command. Can we please speed this conversation along to the point where you tell me what you'd like me to do here?"

The two brothers and even Impala were taken aback. They weren't used to such an abrupt manner from the angel.

"I-I don't know. Maybe, change her back?" Dean said.

"As you just mentioned, no one can turn cars into people. Similarly, I can't turn people into cars. I don't think it's a power God believed would come into use when he created us."

"Great, thanks, Cas," Dean growled. Damn, this angel was getting cocky lately. "Look, just go back if you have to and we'll buzz you if we need you."

"Dean, wait," Cas said, his brow furrowing again. Dean looked at him with annoyed expectancy as the angel pulled out a battered mobile phone that the brothers had previously given him from his trenchcoat pocket. "Please do not 'buzz' me. I find the vibration setting on his device uncomfortable."

Dean covered his face with his hands as Sam and Impala exchanged glances and stifled laughter. "I didn't mean it literally- Look, we'll call you. Just go."

The sound of flapping wings echoed throughout the room, and in the blink of an eye, the angel was gone.