CHICAGO — Snow-prah Winfrey, Bill-izzard Murray or Salt Capone could be coming to a snowbound Chicago street near you next winter. The city’s Department of Streets and Sanitation confirmed Wednesday that it will hold a contest later this year for the public to name some vehicles in its fleet of almost 300 baby-blue “Snow Fighting Trucks.” Mimi Simon, the department’s director of public affairs, wrote in an email to the Tribune that details of the competition are still being fleshed out. “The Department of Streets and Sanitation (DSS) together with the Department of Assets, Information and Ser…