Superdawg is one of the few remaining drive-in restaurants in the country, and the very last one in Chicago.  It was first opened in 1948 by Maurie and Flaurie Berman, and it remains a family business today.  Maurie and Flaurie are depicted as hot dogs on the roof of the building and, last we checked, they both remain alive and well.  Customers drive up and order through a metallic speaker box, and carhops deliver the food on a tray that attaches to the front window (although there's limited counter seating inside and a few patio tables outside).  By the way, it's a "Superdawg" not a hot dog.  It's bigger than most Chicago hot dogs, and it's loaded with condiments, including mustard, relish, chopped onions, and a giant green pickle.  Order a "hot dog," and you'll get an icy stare, as any loyal Superdawg customer can attest.  Oh, and no ketchup.  You want ketchup?  Then put it on yourself.  All sandwiches are served with crinkle-cut french fries and green tomatoes that come in distinctive heat-preserving boxes.