I guess they need to stop cell phone(at least hand held) use while driveing, eating food, reading print material and having conversations as well while people drive. California is really trying to regulate too many things.
I just got a 7 inch Garmin Touch screen gps and drove by a couple of california's Finests in Big Bear and in the LA basin. Not one stoped me for having the GPS in the front of the dash area. Bummer this is what is happening with a use full tool.