If Google Glass automatically detected you were in a car and could transfer the information directly to the cars entertainment/navigation system then surely this would be okay in the eyes of the law? :confused:
Mercedes Is Testing Google Glass Integration, and It Actually Works « Wired
The first application is a navigation program that allows you to enter an address through Google Glass, get in your car, plug in your phone and then the destination is transferred to the in-dash navigation system. Once you've arrived near the restaurant/bar/nightclub/BBQ joint and unplug your phone, the system re-transfers the data back to Glass to complete the journey.