For 1950s-style eats in the streets, look out for the R 'Lil' Diner food truck roaming through Oklahoma. This local diner on wheels features soft serve ice cream, old-fashioned floats and hand mixed sodas. Stop by for breakfast, and start the day off with a hearty portion of biscuits and gravy, or wait for lunch to enjoy daily specials like patty melt sandwiches. This classic diner on wheels cooks up everything from hot links and chili dogs to bacon cheeseburgers and turkey wraps.