Mobile catering trucks are similar to mobile food trucks, but are hired for specific events. The client chooses food from a catering menu, and the truck then serves the food at the event.
The differences between catering trucks and food trucks are primarily in the manner of doing business. One particular advantage of a mobile catering business is you're not risking as much in inventory because you are cooking and bringing food as ordered for the party.
You also have a specific destination, so you need not worry whether your favorite destinations will be busy or not.