The sausages were culturally imported from Germany and popularized in the United States, where they were a working class street food sold at hot dog stands and carts and came to be associated with baseball and the U.S. Hot dog preparation and condiment styles vary regionally in the United States. Although linked in particular with New York City and New York City cuisine, the hot dog became ubiquitous throughout the United States during the 20th century, notably becoming an important part of Chicago street cuisine.[6][7][8] The hot dog's cultural traditions include the Nathan's Hot Dog Eating Contest and the Oscar Mayer Wienermobile.