The maker of those little tree-shaped air fresheners you find dangling from rear view mirrors have sued Gap Inc. over Old Navy's use of the iconic image in a t-shirt, emblazoned with the slogan "Keeping it Fresh." The federal lawsuit, according to the Examiner, was brought against the local retail mammoth in U.S. District Court in Syracuse, N.Y. The company, simply titled Car-Freshener Corporation of Watertown, claims that "the design on the T-shirts is......