A lot of cities are famous for their street food — crema-lathered elote on Avenida Michoacán, dirty-water dogs from a cart sitting at Broadway and 42nd, crispy arancini peddled by fruit vendors through the narrow alleyways of Palermo. But only Baltimore is known for its highway food. The Pulaski Highway, to be exact. Since the early 1970s, this 35-mile stretch from “East Bawlmor” to Abingdon has been Maryland’s open-air food court — a smoky corridor of roadside shacks carving