50s handout

The automobile revolution talks about the car revolution. In 1950, the number of cars doubled from 30 million to 74 million. 4.5 cars were junked every year during the 1950s because Detroit car makers encouraged consumers scrap their old cars. The interstate highway system was a supporter of the highway. it was 41 thousand miles of four lane roads, it needed 16000 entrance ramps and 55,000 bridges. the grand cost totaled around129 billion.