When you enter a destination in Google Maps as part of Google built-in, Google Maps will highlight Super Cruise-compatible roads and estimate how many minutes of your trip can be driven hands-free, helping you choose the most optimal route.
As you drive, Google Maps will display where hands-free driving is available and when you’re leaving a compatible road. At the same time, Super Cruise will help keep you in the correct lane for your route and alert you when it’s time to take the wheel.