In 1950, the United States was alone in having 1 car for every 4 persons. By 1974, Belgium, France, Germany, Great Britain, Italy, the Netherlands, and Sweden had caught up.
परन्तु उस समय तक अमरीकी संख्या बढ़कर लगभग हर २ व्यक्‍तियों के लिए १ कार हो गयी थी ।