 Get an eye on travel now. Here's Peter Greenberg on WDEL. This may be another summer of the Great American Road Trip, but traffic is already worse in major U.S. cities, with more and more Americans living further from downtown areas. Between 2021 and 2023, the 56 largest metropolitan areas in the U.S. lost nearly 2 million people, and the number of long commutes, rides of 75 miles or longer, are now up a third since 2020.