Allan, here's a thought: from a prospecting magazine, etc., get a picture that fits your needs. Then, have it vinyl laminated, and affix it to your bus. Or, take such a picture to a local firm which makes vinyl signs for cars, businesses, etc. MOST of the more modern firms have a scanning device which will duplicate your picture on a sticky-backed single-color vinyl sheet, then will cut it for you. One of my window cleaning clients does that kind of stuff; saw it the other day, and was impressed. Shouldn't cost very much. Hope this helps, Jim.