For the start of the ideas series, go here . This idea was inspired by this story , about a company that uses a 3D printer to make cars. If I understand it correctly (and I might not), they make a basic framework of machinery and then a shell is created to be on top of it. And if I don't have that right, well, that's the way I'd do it. The idea is to make about half a dozen different basic car 'frames'. These would differ a bit in size, with some being longer than others or perhaps a bit wider. This would allow for smaller cars and recreations of some of the longer cars of the past. Yep, the past. Because the inspiration for the shell on top would be the classic cars of yesteryear. Just take a look at these cars from the 30's . Gorgeous. Simply gorgeous. Some of them would have to be updated for safety reasons, no doubt, but the clean outside lines could be kept. A recreation based on one of these would turn heads and brin...