The New Yorker has a great slideshow up today of covers we weren't supposed to see, and it turns out the story behind The New Yorker's delightful March 12 cover featuring Romney driving with Santorum strapped to the roof of the car is also the story of the quickly shifting fortunes in presidential politics.

As originally designed, Bob Staake's cover featured Santorum driving a car with Romney strapped to the roof -- a play on the infamous story of Romney and his dog Seamus -- at a time when Santorum looked like he might defeat Romney in the Michigan primary.  "Once results showed that Romney had prevailed, we realized we had the building blocks of a good image," says Françoise Mouly, the magazine's art editor.

The slideshow also featuring several "covers you were never meant to see" promoting Mouly's upcoming book, Blown Covers. Needless to say we're New Yorker cover dorks, and we quite enjoyed the rest of the images in today's feature