 AAA is projecting a record number of travelers over this year's Fourth of July holiday. Minnesota spokesman Skyler McKinley. Looks to be the busiest Independence Day travel period in our data on record. We think 60.6 million folks are going to be traveling by car. They're going to join folks who are taken by air and by cruise ship for a total travel volume of around 71 million people. McKinley says lower gas prices and relatively cheap airfare could be behind the push.