New highways in the early 20th century helped propel automobile travel in the United States, primarily cross-country. Commissioned in 1926 and completely paved near the end of the 1930s, U.S. Route 66 is a living icon of early modern road-tripping. Motorists ventured cross-country for holidays as well as migrating to California and other locations. The modern American road trip began to take shape in the late 1930s and into the 1940s, ushering in an era of a nation on the move. The 1950s saw the rapid growth of ownership of automobiles by American families. The automobile, now a trusted mode of transportation, was being widely used for not only commuting but leisure trips as well. As a result of this new vacation-by-road style, many businesses began to cater to road-weary travelers. More reliable vehicles and services made long-distance road trips easier for families, as the length of time required to cross the continent was reduced from months to days. The average family can travel to destinations across North America in one week. For example, Maryland journalist Kevin James Shay drove his two kids, Preston and McKenna, across the United States and back in roughly two weeks in 2013, visiting the Grand Canyon, Mount Rushmore, and other top attractions during the 6,950-mile trip.