Before car was invented, people were looking for a more convenient and pleasant way for travelling. Vehicle was invented under this demand. First automobile patent was obtained in 1787 by Oliver Evans, an American inventor.[1] However, it was more of a “prototype” and incapable of family use because it was not introduced to the mass market. It took about a hundred years for Oliver and his successors to explore mass-production techniques. Benz’s establishment of modern car was a significant milestone in the era. Benz helped increase the fuel-consuming efficiency for vehicles. Furthermore, Henry Ford revitalized the vehicle industry by offering affordable, capable Model T which officially made modern cars widely available to mass market. The Model T was introduced in 1908 came with black color and cost a modest $850, values $20800 nowadays, which made vehicles affordable. A competent accountant at that time could expect to earn $2000 …show more content…
Fuel provided in the first half of the twentieth century was not as “clean” as it is nowadays. Gasoline producers began to add a kind of toxic element, Lead, to gasoline in 1923 in order to improve engine performance which even resulted in 97% lead in the atmosphere that were polluted by gasoline with lead in 1970s.[12] Lead may cause high blood pressure and abdominal pain for human beings. It also severely threatened children’s health. [13] However, lead, as the additive, was not banned until the end of twentieth