5 things that can ruin your summer road trip (and how to fix them now)

A recent Hertz survey found that 64 percent of Americans are planning a road trip this summer, with nearly three-quarters planning to take at least one trip between June and September. That’s tens of millions of people about to spend hours behind the wheel, many on highways they don’t usually drive, in weather they aren’t always prepared for, and pushing through fatigue to make the most of their vacation time.