Place the shredded cabbage and carrot in a mixing bowl. Add the mayonnaise, apple cider vinegar, honey, salt, and black pepper. Stir until the vegetables are evenly coated. Set the slaw aside.
Heat the olive oil in a large skillet over medium heat. Add the crumbled meatloaf along with the chili powder, cumin, and cayenne pepper. Cook for 4 to 5 minutes, stirring often, until the meatloaf is warmed through and coated with the spices.
Warm the flour tortillas one at a time in a dry skillet or directly over a low flame until soft and lightly toasted.
Spoon the spicy meatloaf mixture into each tortilla. Top with a generous portion of the cabbage slaw.
Finish with fresh cilantro and a squeeze of lime juice before serving.