LOL. 5 minutes a burger, at $6/per. So this thing can sell $72 worth of burgers per hour. At that rate and price, there's no way this will ever be profitable. Even with add on sales of artisanal, hand shaved potato chips with bespoke cream soda bumping the cost up to $10 a customer, this is DOA. Interesting technology, but as a business, DOA.
Edit; I missed that he's paying his employees $16/hour (good for him). So if he has 2 employees fulltime, he's got $32/hour + payroll taxes/unemployment insurance etc to earn before he can pay off the R&D for this, his rent, his food cost, his utilities, his advertising, and then have an ROI for his investors.
And he has "experience" and a family in the business! Why they didn't talk him out of this is beyond me.