Dean can't help it if his car is the hottest thing on wheels in the entire apocalypse. He grins, leaning back against her and patting the bonnet fondly.

"Met some kid with a magic wand. Honest-to-God, a freakin' magic wand, dude. She runs on magic now."

Which gets a little nose-wrinkle, but, well, it works so far. And he keeps a couple tanks of fuel in the back for when it stops.