Whenever you travel abroad for a vacation, you step into a whole new world—so, of course, you’ll want to explore it. For many people, the best way to do that is a road trip. With a car, you get to savor your destination’s natural scenery and unique architecture and head to any spot that catches your interest. There is a downside, however: the fact that your car road trips are destroying the very environment you’re wandering in. According to Lewis & Clark Law School, car emissions are...