Then it's time for cities to not be cowards, and go all in on the food bus hyperloop model. It needs to be like those conveyor sushi places, except on the scale of a city. Places like mcdonalds should have fleets of busses with hot-and-ready food just doing loops around town, only returning when they re stock.
Companies could even share busses. Or delivery companies like door dash could switch to the collective bus model and turn thier drivers into bus drivers.
I need to be able to just walk outside and flag down the burrito man, just like you would for an ice creme truck
Most fast food is largely cooked to order and pretty rapidly degrades once you try to hold it for more any real amount of time before consumption. /Maybe/ partially assembled burgers could have patties cooked right before serving or for pizza do a model like the pizza vending machines where it's baked right before it's dispensed but I don't see the version becoming popular where it's a lot of food fully precooked and assembled being predictively shuttled around town.
Beyond quality issues it'd just lead to a massive amount of food waste too. In order to always have the order available you'd have to stock everything in excess of demand and food only holds for so long before it has to be disposed of for safety reasons.
Companies could even share busses. Or delivery companies like door dash could switch to the collective bus model and turn thier drivers into bus drivers.
I need to be able to just walk outside and flag down the burrito man, just like you would for an ice creme truck