Smartphone Driver Heads Up DisplayHade road glass is a basic device that will make full use of your smart phone and give you a flexible interface in a very limited budget. The smartphone driven Google glasses are a general motors' head mounted display accessory for any phone. Just stick it on your dashboard, put your smart phone in its cradle, you will see your navigation and navigation information in the line of sight of you, so you don't have his eyes from the road or driving on the