The Apple AirTag is a versatile device that can be attached to valuable items, such as car keys, to help locate them if lost or misplaced. With the Find My app on an iPhone, the AirTag can help users locate their car key and, by extension, their car if the key is used to unlock or start the vehicle. This can be particularly helpful in crowded parking lots or unfamiliar locations where it may be difficult to find a parked car. Additionally, the AirTag can be used to help locate keys if they are lost or misplaced, providing an added layer of security and peace of mind. Whether you need to find your car or your keys, the Apple AirTag is a reliable tool that can help you locate your valuable items quickly and easily.