I agree, that would be just under 6% of all taco bells. The should have done a few in each region.

I can't imagine that people having fun messing with it, putting in ridiculous orders would be region specific.

Has anyone here tried it and know how it works ? If I order 6 large pizzas with a topping of rocks, will that come up on the screen ?

I have worked on NLP systems for decades, the usual pattern is converting a request into structured data, and sanity checking the structured extracted data. If you ordered a pizza with rocks on it, the ‘toppings’ filed would be checked against a datastore of available toppings.

Makes sense, but then where would the fun be in putting in ridiculous orders, and I wonder how the Taco Bell system is responding when people order completely off-menu items like pizzas ?