It’s possible. I work at another ice cream place and we have to take apart and clean our soft serve machine twice a week. Whatever soft serve is in the machine at the time is thrown away. We try not to fill the machine if it’s getting close to closing time so if we run out and it’s close to closing time I’ll let the employee in charge of the task go ahead and tear it down. Sure we could fill it but product in the machine at breakdown time has to be thrown away and you need a decent amount in there for it to function properly. Much more often than not you’d end up wasting it. Usually early breakdown isn’t a problem but occasionally you’ll get some nimrod who’ll come running in at the last minute.
But back to tacos: the best tacos are homemade. And by that I mean HOMEMADE shells. Nothing beats fresh corn tortillas!