Overview: This trip, Guy's on the road for some stellar food mashups. In Somerville, Mass., the burger joint putting the crowning touch on a mac and cheese burger. In Middletown, R.I., a seafood spot stuffing quahogs with chorizo and turning calamari into a Kung Pao classic. And in St. Louis, the Filipino-inspired food truck hand pulling noodles for savory dishes, and washing it all down with a two-finger punch drink.