Very nice, I really love this technique, however sadly I don't think it's acceptable to scan toy cars and post them here, someone has copyright on the car design. It's probably not illegal for you to scan the cars and post them here, it's probably covered by fair use, but fair use is not applicable in free culture because free cultural works have to allow even commercial reuse -- if someone takes these cars from here and starts selling them, he may get sued by the toy manufacturers (or whoever holds copyright on the design of the cars). Generic car shape isn't copyrightable but added aesthetic elements are, design of cars can definitely be owned (unfortunately), otherwise any car manufacturer could just create exact copied of let's say Ferrari cars without paying any license fees etc. It's similar with guns as well: games that want to use real existing guns have to buy a license. So while it may be OK to post this, the free license is likely ineffective, it's the same as if someone posted Harry Potter characters here: it's fine as fan art but not as a free cultural work. This is a common trap in free culture, it's often tolerated e.g. on Wikipedia for populist reasons and so the idea that it's OK to do is being normalized, but true free culture simply doesn't permit fair use (I even had mascots removed from STK using this argument, it's not just my opinion). It's a shame because it's really a nice work, but I think it can't be posted under a free culture license. It would be awesome if you (or anyone else) could make a physical model of a car with own design and scan it in the same way, then it would be fine. Anyway, I just wanted to point this out, the final word is of course that of the admin, I'll just leave this here.