In Miami, there are almost 100 food trucks. Most serve the same three items — burgers, tacos, and cupcakes. Then there's Mr. Good Stuff, which offers the luna. If you're asking, "What the heck is a luna?" you're not alone. Contrary to popular belief, it is not lunch for moon men. We're talking about pork and brisket slow-cooked for hours until the meat is tender, juicy, and filled with the flavors of your childhood home. These meats are cradled inside an arepa, a Venezuelan corn cake freshly made on a griddle. They are then topped with house-made slaws or pickled onions until they're sloppy, messy, hot, and so satisfying you'll be rolling your eyes toward heaven as meat juice trickles to your elbows. For eight bucks, your view of food trucks and the world, along with your waistline, will expand.