What was the rate of car ownership in America by the early 1960's?

In the early 1960s, the rate of car ownership in America was approximately 1 car for every 2.3 people. This means that there were around 2.3 people for every car in the country during that time period. This increase in car ownership was largely due to the post-World War II economic boom and the expansion of the interstate highway system. The rise in car ownership had a significant impact on American society, including changes in urban development, transportation infrastructure, and consumer culture.