Customers wait in line to fill up their tanks this week at a Costco gas station in Nashville, Tenn. It will take several days for the supply chain of fuel to return to normal even after Colonial Pipeline said it had brought its entire pipeline system back into operation. Brett Carlsen/Getty Images hide caption
The shutdown of the Colonial Pipeline following a cyberattack is prompting speculation about what could happen to gasoline and diesel prices ahead of Memorial Day. Rick Bowmer/AP hide caption
Drivers are paying less than $1.99 at more than two-thirds of the gas stations in the country, according to AAA. Sue Ogrocki/AP hide caption
Gas prices have fallen markedly, and may continue to dip further, according to AAA. Joe Raedle/Getty Images hide caption
Motorists drive past a sign advertising regular gasoline at $1.88 per gallon at a station in Longmont, Colo., on Dec. 22, 2018. Falling gasoline prices have given drivers a little extra cheer this winter. David Zalubowski/AP hide caption
Gas prices are expected to increase during summer months, but a recent OPEC decision could bring prices down as soon as this fall. Gerry Broome/AP hide caption
Traffic crawls on the northbound lanes of the Henry Hudson Parkway leading out of Manhattan on Friday. Julie Jacobson/AP hide caption
Drivers work their way out of Dallas during rush hour on July 1. The U.S. is on track to break the annual record for gas consumption this year. LM Otero/AP hide caption
The economy is stronger than during the 2012 presidential election, but stock owners in 2016 are doing much better than wage earners. Richard Drew/AP hide caption
Demonstrators in Philadelphia during this week's Democratic convention echo another presidential election year, 1968. John Minchillo/AP hide caption
Average U.S. gasoline prices have fallen more than 10 cents a gallon in the past month. J Pat Carter/Getty Images hide caption
Crowds gather to watch the Fourth of July fireworks show last year at Kailua Beach on the Hawaiian island of Oahu. Julie Thurston Photography via Getty Images hide caption
Gasoline prices are displayed at a filling station in Philadelphia. Matt Rourke/AP hide caption
Fueled by low gas prices and a stronger economy, Americans drove a record 3.15 trillion vehicle miles in 2015. But the additional driving may lead to more pollution and traffic gridlock. Zoran Milich/Getty Images hide caption
Consumers have been benefiting from lower gas prices. Here, prices dip below $2 per gallon at an Exxon station in Woodbridge, Va., on Jan. 5. Saul Loeb/AFP/Getty Images hide caption