Other than the contactless/app part of it, I saw McDonaldses with this tech decades ago. It hasn't seemed to be a game changer until now. What I see here of promise is maximizing parallel service with the minimum amount of land usage. Since you'll need room for multiple cars (and in America today, that means unreasonably giant SUVs), I'm not sure how much benefit you'd get from robot cooks. Without a dining area, it would probably be a relatively spacious kitchen.