Kmart is building off of their successful "Ship my pants" formula. You might recall that we wrote about Kmart's "Ship my pants" ad and how it took the advertising world by storm. Now Kmart has released a new spot that uses a similar shtick – "Big gas savings!" http://youtube.com/watch?v=m1yir-p68xM?rel=0 When I first heard Kmart rolled […]