Dean could understand how hard it was to choose between one or the other. Though to see if they were willing to work together as a possibility. "It's worth a try. Let's get going then and see if we can catch them before they go inside that warehouse. It's still pretty early." The older Winchester then got up out of his seat, closed the laptop and went to change into normal clothes since they no longer needed to be in the damn suits. When Sam was ready, they went to the Impala and headed toward the old warehouse. 

It was upon reaching the warehouse that Dean parked his Baby where it could stay hidden but the entrance well within sight to keep an eye out for the girl and the guy she was with.