The car could be baby daddy acting on Pinocchio or possibly Pinocchio himself. (Or Von Rothbart. They've got to have the Black Swan in there somehow!
) There's an off chance it's Balefire who's the baby daddy. Pinocchio might be chancing a return to Storybrook even though it might return him back to wood. (I've thought he left Storybrooke to undo the magic puppetry.)
Gold's next quest is restoring Belle's memory and vengeance on Hook, who is not dead. The diversion is how he gets away instead.