So far, no accident, but this trend to disable access to the navigation system while the car is in motion, even by a passenger is actually more dangerous than previously. It's highly distracting trying to use voice navigation and it always does not work very well. The alternative is to use a separate hand held gps or smart phone, which can be potentially more dangerous and distracting. Has there ever been a controlled study that demonstrates disabling navigation access while driving is safer than the alternative" having used factory navigation systems for over 12 years, I strongly believe that disabling navigation systems while the vehicle is in motion is more dangerous, and represents a safety hazard if alternative routes are required in an emergency. For example, what if you are lost in a bad neighborhood, or someone is following you" you don't dare pull over and stop. I think this issue needs further attention.

- Las Vegas, NV, USA