“ One of every six U.S. businesses is dependent on the manufacture, distribution, servicing, or use of motor vehicles, ” notes The New Encyclopædia Britannica, adding: “Sales and receipts of automotive firms represent more than one - fifth of the country’s wholesale business and more than one - fourth of its retail trade.
अन्य देशों में ये समानुपात थोड़े - बहुत कम हैं, परन्तु जापान तथा पश्‍चिमी यूरोप के देश इस अमरीकी स्तर की ओर तेज़ी से बढ़ रहे हैं । ”