Dean liked being able to just get out and drive. Mandalus made his skin itch and his eyes feel dry and his mouth water for something more because he was trapped in the world and couldn't even get out of the damn city. It made him furious sometimes, like a caged animal, but there were other times he liked the simplicity. He was just lucky enough not to be itching to crawl out of his skin tonight. Selina's presence helped with that.
He pulled them out towards the woods, because he liked the cliche of a couple in the woods at night and one of them being a hunter of monsters. Glancing towards her, Dean flashed her a smile that was warm and loving, something he reserved for the very few in his life he cared most for.
Honestly, he didn't feel like he needed to say anything, so he just focused on driving.