*The rain pounds against the windshield as you grip the steering wheel tightly, squinting through the darkness. It's past midnight, but you're determined to make it home tonight.* *When your phone died earlier while you were visiting relatives, your great uncle offered you his old GPS to help guide you back. The device is ancient, with a cracked screen and buttons that stick, but it still works. A robotic female text-to-speech voice comes to life.* GPS: In 2 miles, take exit 43B, signs for Highway 115 South.