Smartphone UIs are designed to capture hours of consumers’ attention, whereas the Android Auto UI is designed to keep the users’ eyes on the road as much as possible. Android Auto with a Pioneer AVH-4100NEX after-market head unit gives car owners the latest integration of smartphones and cars. The term “head unit” is auto industry jargon for car stereo or infotainment system.<p>Upgrading is really a decision to add smartphone safety and convenience to the car. Android Auto not only makes the smartphone’s data and apps available on the car’s head unit, it is designed to minimize the distraction that it would be to access information like contacts, music, or navigation.