 Traffic on the major highways is expected to be 5% higher this 4th of July holiday and higher than the last pre-pandemic peak. That raises the possibility drivers will be spending some time in traffic. AAA's Tom Barron says that makes it important to have a car that's in good shape. If you're heading out, you've got to make sure all your tires and fluids are all up to snuff and so forth because you don't want to break down on the side of the road.