Falling fuel prices are reintroducing many Americans to a cherished Independence Day tradition: sitting in a traffic jam. Despite reports that car culture is in decline, it seems that if filling up is cheap enough, the country still loves a road trip. This July 4th the national average price of a gallon of petrol (gasoline) is $2.77, almost a dollar less than a year ago, and the lowest on this date since 2010. The American Automobile Association reckons about 35.5m Americans will travel by car over the holiday, and reports that monthly petrol demand has risen by 4.5% since June 2014. The Federal Highway Administration, meanwhile, reports that total vehicle-miles travelled have risen for 14 consecutive months. Americans drove nearly a trillion miles in the first four months of 2015—a new record. Europeans can only gape in disbelief: British drivers, for comparison, pay the equivalent of $7 a gallon.