Here is a video produced by Street Food Diaries about Barone Meatball Company.
During that time the food truck business has boomed in the Triangle and several commissaries have opened up. If your picture of a food truck is someone actually doing all the cooking on the truck then think again. Most of the food preparation is done in a commercial kitchen (commissary) that is independently owned and leased out to multiple food trucks. These kitchens and the food trucks are randomly inspected by the health department to ensure that the food is safe to eat.