JoshBryan/Shutterstock Various factors drove the golden age of cars during the '60s — the U.S. economy boomed after the Second World War, giving many Americans the ability to purchase vehicles. This increase in automotive sales allowed car companies to invest in design and technologies, allowing them to build models that caught the attention of the buying public. The 1956 National Interstate and Defense Highways Act also saw the establishment of the national interstate highway system, making it easier and more comfortable to drive across the nation. The same thing happened in Western Europe when it came to cars. Even though...