Curious that Macdonald's, with so much careful specification of all processes, hasn't done this, at all. e.g. fry/remove/salt fries. (though their standard coffee is mostly automated). Macdonald's is so well-placed, I can only assume it isn't actually cost-effective for them. Maybe it's worth it for Momentum, for the PR? Or, by starting from scratch, they can make radical changes? Or, it isn't happening? (it's just a "concept" so far).
Finally, Larry Niven wrote a short story about automated restaurants "Intent to Deceive" (1968).