text: how do wrapped advertisements work? ones where they wrap an advertisement around a subway train, for example? i've seen it on buildings also. how do they make sure the picture is evenly applied when the surfaces are so uneven? if there are uneven places, they would need to be behind background areas that would not be noticeable, unless there is a high-tech adjustment on the printing end that i kind of doubt (cost-prohibitive). otherwise, i suppose it would stick on like any billboard, using smaller connecting sheets.