Why can't we just stop using phones while driving? No matter how much one reduces distraction, it is still more distracting than not using it in the first place. Twitter while driving - why on earth?!? For navigation it is obviously a good idea because you can keep your eyes on the street and don't have to look to your GPS or even try to read street names.
Watch »From One Second to the Next« [1] from the »Texting and Driving - It can wait« campaign.