Thank you, that helps a lot.
I thought a 3D car was one a person would drive away from the printer. That the 3D gun would be loaded and ready to fire, and I couldn't see how that could work.
It doesn't seem to me that this would be a cheaper way to make many products which are not machined. That process is automated, too, and can start out with most of the job done.
Anyway, I feel better and understand the process better.
Thanks again.