Body panels, no. But that broken canooter valve housing that no one had produced for 60 years....... OK J.P. I get your point. the process is pretty remarkable. I work at an automation shop, and a lot of what we build is for powdered metal factories. It starts as a powder, gets pressed into the shape of the part, then sent through furnaces to sinter it and make it a solid piece of metal. Lots of transmission parts, Variable valve timing parts, and oil pump parts are made that way. The last one we did was handling the oil pump rotor, inner, and outer housing for the new Corvette engines. Why not replace the press with a 3D printer for small batch/ one-off parts? It's already being done. I've seen it. This process is becoming more accessible every day. Soon you will be able to print parts at home out of "liquid" metal, then fire it in a kiln to set it up. you won't even need to make the casting molds.