As the 20th century dawned, new forms of transportation was becoming commonplace. With the invention of the automobile, people could go faster and farther than ever before. But driving was dangerous in rainstorms because something we take for granted today, the windshield wiper, didn't yet exist. One woman noticed the problem and her innovative invention of the first operational windshield wiper transformed transportation and made the roads and highways a safer place. Listen to the story of Mary Anderson, a woman who made a difference.