Nothing wrong with asking the question, I guess
I do like the idea of metal printing a car, but the materials cost alone will bring real tears to your wallet. That beign said, it would involve you developing your own printer and controllers, not to mention the cabinet to build it in , beacuse it would need to be capable of containing an inert gas ie argon
Keep us posted on your progress, keep throwing out ideas, you never know for whom it might spark an idea that could solve the one last issue cause there are quite a few minds here that would be willing to help work through the challenges or point you into the right direction