Are just going to pretend that driver don't get distracted already with GPSs? with conversations with other passengers? with phone conversations?
What if is way more safe to use your voice than your hands to communicate? (and some people is going to do it anyway despite laws against texting while driving)
What if is way faster to change your eye-focus than to move your eyes and head to see the GPS?
Many of you guys commenting here are acting like this thing is black-and-white when is clearly not.
The burden would be on the maker to ensure that.
Otherwise, it maybe could allow for safer driving, but it sure would allow reckless facebook/driving.