Schaumburg's relative isolation was broken, however, as the automobile became the primary mode of travel. The construction of O'Hare International Airport near Rosemont (about away) in 1955 in what was previously O'Hare field, the construction of the Northwest Tollway through the farmlands in 1956 and the presence of a technical and business workforce at the Pure Oil Company in Schaumburg now put Schaumburg in a location rampant with suburban growth. In response to development pressures, the area encompassing what was known as Schaumburg Centre was incorporated in 1956. At the time of incorporation, the village consisted of two square miles and a population of 130 residents.