From Temple University’s campus to South Philly, the beyond-fun dining craze has truly boomed. If a diner craves something, chances are he or she can source it on wheels: brick-oven soppressata pizza, green-tea macaroons, gourmet mac and cheese, Spam musubi, sweet-cream ice cream, pour-over coffee. That’s not even mentioning staples such as soul food, cheesesteaks, crepes, and falafel.