My mother is a genius. She just discovered the most amazing catering idea for our wedding:

A big green truck that has a brick pizza oven in it. Serving unlimited brick-oven pizzas made on-site (choose your own toppings), green salad, GELATO, and cappuccino.

http://www.biggreentruckpizza.com/7_001.htm

Um...no words for  how perfect this is.