"Quad Manufacturing"??? They are saying there will be no assembly line? This ragtag bunch is going to revolutionize product manufacturing? A proven process that companies with BILLIONS of dollars of capital and the smartest people on the planet still use and even then, run into slowdowns and problems (see Tesla). If world class companies (Apple, Toyota, Tesla, Foxconn, GE, etc.) that spend tens of billions of dollars each year on process improvement and product development haven't discovered the magic of Quad Manufacturing, what makes anyone think this group has invented some revolutionary manufacturing process?
If they did develop some new, wonderful process, they wouldn't be trying to sell pinball machines (which most likely will never exist), but would be licensing this patented process to the aforementioned companies and would end up being some of the richest people on the planet.