I really don't get why people get so pious when it comes to the idea of mounting the ipad in the car.
Has any of you who disagree with this seen modern car stereo systems???? Take a look at the Pioneer Avic z120bt. It has video, audio, internet radio, bluetooth, gps, etc, etc, etc, and costs $1200. It makes no sense to have a deck like that when your tablet can do everything it can 10x more easily.
Of course, these stereo systems are made so that the video doesn't play when you drive, but just about ANY installation shop will bypass the video restriction.
The technology is out there, it's only a matter of time. The responsibility is on the driver to use it wisely.