Use fully chilled cooked pulled pork. Combine it with the BBQ sauce, vinegar, brown sugar, paprika, salt, and pepper.
Divide the cold pork mixture among four vacuum-seal bags and seal them.
Keep refrigerated until the trip, or freeze promptly. Transport at 40°F (4°C) or below in an ice-packed cooler.
Thaw in the refrigerator, or in a leak-proof bag submerged in cold water that is changed every 30 minutes. Open the bag, transfer the pork to a pot, and reheat to 165°F (74°C), stirring often.
Stir and serve on buns or rice.