There is an interesting harm reduction angle to products like this.<p>It's probably the case that people using Navdy will drive worse than people with 100% attention on driving. It's also quite likely they'll drive better than people using a cellphone directly. The question is if it makes people feel safer and thus more willing to do the dangerous activity, countering the safety benefit. (There's also a clear benefit to people actually using phones while driving; letting people know they're late, not being bored, etc. It's just generally trumped by the safety loss; I'd be willing to sacrifice SOME safety for convenience/entertainment.)<p>It's the same thing with sex (abstinence vs. barrier-based birth control vs. hormonal birth control), drugs (illegal vs. decrminalized vs. legalized), etc.<p>It's possible NOT having technologies like this leads to overall less safety; it's also possible it leads to more safety. It depends on the specifics.<p>I have nav (with voice, and a driver information display in my line of sight while driving), and use that, and also don't feel particularly bad about looking at my phone screen to see who called, etc. while stopped at a red light (although I realize it's less than perfectly safe; it's also more of a legal risk than a safety risk in california now, IMO.)<p>Actually using the phone while driving, or having anything but the most brief and cursory conversation while driving in the city, is clearly a sacrifice in safety; I don't mind phone calls on highways, but I generally won't answer in the city.