how did automobile ownership affect american culture after ww2
The American manufacturing economy switched from producing war-related items to consumer goods at the end of World War II, and by the end of the 1950s, one in six working Americans were employed either directly or indirectly in the automotive industry. It gave rise to the "hot rod" culture.
1950s American automobile culture
1950s American automobile culture has had an enduring influence on the culture of the United States, as reflected in popular music, major trends from the 1950s and mainstream acceptance of the "hot rod" culture. The American manufacturing economy switched from producing war-related items to consumer goods at the end of World War II, and by the end of the 1950s, one in six working Americans were employed either directly or indirectly in the automotive industry. The United States became the world's largest manufacturer of automobiles, and Henry Ford's goal of 30 years earlier—that any man with a good job should be able to afford an automobile—was achieved. 
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1950s American automobile culture [SEP] Introduction
A new generation of service businesses focusing on customers with their automobiles sprang up during the decade, including drive-through or drive-in restaurants and more drive-in theaters (cinemas). The decade began with 25 million registered automobiles on the road, most of which predated World War II and were in poor condition; no automobiles or parts were produced during the war owing to rationing and restrictions. By 1950, most factories had made the transition to a consumer-based economy, and more than 8 million cars were produced that year alone. By 1958, there were more than 67 million cars registered in the United States, more than twice the number at the start of the decade.