2013 refresh on the Mustang was definitely beneficial to Ford. When you think about it, it comes standard with HID headlights and LED tail lights on every trim level, something Chevy makes you pay extra for in the RS package.
I the saw on another article that challenger was used in the new fast and furious movie? I didn't see the movie, but maybe that has something to do with the big jump in sales, as dumb as it sounds?
Camaro sales make sense after mention of the '14 refresh