In remark to the "they won't chase the little guys" sentiment, I had to laugh. Does the person who said this live under a rock? Recently, the RIAA has pursued lawsuits against individuals, college students, using school servers to serve illegal MP3 files. How's that for chasing the little guy? And as far as I know, they weren't selling them, just making them available. I agree with many here that it depends on the intent of the use of copyrighted/patented/trademarked materials that is the real issue. If one uses a picture of a Mustang in a render or a painting, I don't expect Ford to send in the lawyers - what would be their case? They'd have to sue anyone, anytime, anywhere who uses a Mustang in a picture or photographs one or uses its likeness, let's say, for a cartoon or comic. But, if the person is using it in a way, such as an accurate model or as a logo, that is being sold, then permission is required. There is a thin and difficult to traverse line between infringement and proper use made only worse by the lack of clear, concise delineations between them. At what level does a 3D model of a car become copyright/patent/trademark infringement? I see the day when companies will "license" or sell their products as 3D models just like physical models (e.g.). No more making your own that is very accurate, fearing court summons; you'll have to buy the "legit" model. Somewhat scary... BYS