Most the catering trucks here are quite large and cook your meal while you wait (tacos, quesadillas, etc.), and have a full kitchen (grill, sink, refrigerator, freezer, etc.). All that wouldn't fit in a small van and is required by law in most counties.
Maybe we don't call them food vans here because they don't use vans, they use trucks instead.
I supposed cold food or specialized ones could use a smaller van (i.e. a hot dogs vendor), but typically the only mobile food vehicle you see here that uses a van is the ice cream man. And that's what we call him: "the ice cream man."

And here, anything on a truck chassie is called a truck. A van is called a van, however. The smaller trucks are called "light trucks" and the really small ones (like the little toyota pickups) are called "toy trucks."

Edited by wistex - 14 April 2006 at 5:47pm