"I cannot afford to buy you a new car. Also, you don't have a license. Do you?" Castiel sounded a little confused by that request, but he did answer it diligently and with a serious voice. "My friend Matteo. He is my best friend. We share a profound bond. He has a little brother that attends your university."

And Matteo had assured him that Sam was going to go on this road trip for him. Apparently 'it was easy to guilt little brothers'. Castiel was less convinced of that, talking to Raphael.