Because of this, a real variety of restaurants has come about specializing in all kinds of foods. McDonald's is the king of a subgroup of restaurants called fast-food restaurants. Chances are, no matter where you live, there is a McDonald's restaurants near you. There are even McDonald's in the Soviet Union. Now McDonald's is trying something new. It is called McDonald's Express and there is a test site in Peabody, Massachusetts. It is part of a Mobil gas station. This allows you to fill up with gas and fill up on food at the same time. What will they think of next?