Spatial structure of a part of cities in the USA is determined by highways. Usually, the impact of motorways only modified the spatial structure of cities in Europe. Another important role of motorways can be observed in respect of suburbanisation. A relatively new phenomenon is the emergence of edge cities. Overgrowth of suburbanisation has several harmful impacts which many think are in connection with motorways. However, to counterbalance their impacts is a very important task. Our paper is a short review of these issues.