The Big Egg in Portland, Ore., is a stationary breakfast cart, serving sweet and savory egg sandwiches. Customers can kick-start their day with a Monte Cristo, one egg any style, grilled black forest ham and gorgonzola, drizzled with pure maple glaze and stacked between two pieces of crunchy vanilla cardamom brioche French toast. The next stop is DC Slices, Washington's first mobile pizza truck where the servings will have you seeing doubles. Then, a trip to Hewtin's Dog in Providence has customers rolling over for its house-made gourmet sausages, served from a traditional rolling street cart. Finally, Ed's Lobster kiosk in New York serves some of the most extravagant street food, in the heart of the financial district, with its pricey -- yet delicious -- lobster rolls.