Thomas Frohlich:

Roads are the arteries of the nation, and the automobile has been the centerpiece of American culture for decades. Despite Americans’ love for their cars, however, the rush hours are no more pleasant, and not everyone wants or can afford a car. According to the U.S. Census Bureau, 9.1% of American households did not own a car in 2013.
 According to a review of carless households in American cities, residents in some urban areas are far less likely to own a vehicle. In New York City, 54.4% of households did not have a car, the highest percentage nationwide. Based on the percent of households who did not own a vehicle in 2013, these are the cities where no one wants to drive.
 The concentration of businesses and people plays a major role in both traffic congestion and in many peoples’ decisions to own a car or not. Seven of the 10 cities with the highest proportion of carless households were home to more than 1,000 people per square mile, and all had above average population densities. The average population density across U.S. metro areas was 273.5 per square mile in 2010, by contrast. In an interview with 24/7 Wall St., Clifford Winston, senior fellow at the Brookings Institution, said that above all, “density is an indication of accessibility.”