No one can really explain where the sudden flood of food trucks that now dominate Houston’s food industry came from. Maybe Food Network star Tyler Florence’s “The Great Food Truck Race” or Houston Food Crawl’s “Food Truck Iron Chef Challenge” had something to do with sparking ambition in aspiring restaurateurs. Places outside the 610 loop, such as the Museum of Fine Arts of History and Rice University, are now havens for dozens of the mobile food joints. But while the origins of their sudden popularity are unknown, one thing is for sure: these food trucks’ relatively low-priced, well-sized portioned and tasty dishes aren’t going anywhere any time soon.