If you've ever used a ridesharing service, you've probably had that moment where you had to guess which car was your ride. Yes, you have the model and license plate, but what good are those on a dark and busy street? Thankfully, Uber might soon take the guesswork out of the equation. It's testing a color coding system (SPOT) that has you picking the color for a light on the driver's windshield that glows when your ride gets close. If you want to help the driver, you can also light up your own screen to show that you're the right person.