From humble beginnings as chuck wagons and hot dog carts, food trucks have risen to become ethnic eateries and gourmet specialists. To build one, see how sophisticated engineering can transform a truck into a full-blown kitchen on wheels.From humble beginnings as chuck wagons and hot dog carts, food trucks have risen to become ethnic eateries and gourmet specialists. To build one, see how sophisticated engineering can transform a truck into a full-blown kitchen on wheels.