When going on a road trip, you often have no idea which stops you’ll make along the way. You may have a planned destination, but not every stop will be outlined in advance. When I think of road trips, I think of long distance and this is a reason you should bring a bathing suit: You may decide to stay all night at a hotel — or you may find a great view by a lake.
Although the ideal decision may be to go skinny dipping in the lake, it may not be legal to do so in some of the states you’ll pass through. That’s why it’s always a great idea to bring a bathing suit — just in case.
(And who knows? You can always ditch the suit at the shoreline, if you want to!)