Android Auto is a convenient feature in most modern cars, but underused. The Custom Assistant, a hidden shortcut that can easily automate tasks such as setting the A/C to a cooler temperature and turning on the lights, can be used to control anything you want to do. The recent addition of Google Gemini to Android Auto makes this shortcut even more useful for complex commands. The shortcut can trigger multiple actions, and it takes only a minute to set up. Since these shortcuts are tied to your Google account, they will be available in any vehicle where you use Android Auto. However, they require a cell signal to operate, and may fail in areas with no coverage.