I am on so many other projects lately that I don’t have time for this one. But I have been dreaming about a parametric stamp mill for about two years. So, instead of having to manually prepare the die (or even CNC-prepare a die), this thing has hundreds of hydraulic cylinders. Feed it the sheet of metal, and the press presses it into the form your code tells it to. This development would mean 1. much faster metal-forming, for whatever you have the shaping files for. 2. much faster re-forming, in case of needing to make a repair on an existing part, assuming it is in annealed or pliable form and not overhardened. And even if the press does split the metal, feed it a fresh sheet and you’re back. There are, of course, still sub-processes that need to be worked out, such as tabs and other interior features to the panels, like ribbing and support or channels for wires, etc. But the main sheet forming technique would be sped up greatly.
This doesn’t quite get you to carbon fiber cars that last 100 years, but it DOES get you the ability to change the body shape to whatever you want every few years. Or to be able to replace panels that get damaged or rust out. Even painting could be sped up if the parts are painted then affixed, instead of assembling the car and having to tape it up and get it ready for powdercoat. There’s lots of ways this incremental improvement could shift us away from “disposable cars” to ones that have a frame built to last and the ability to accept continual improvement on a small-shop or at-home basis.