Night vision requires you to take you eyes off the road which is even more dangerous than not having it at all.
BMW's new night vision will be integrated with HUD like Lexus and Cadillac.
The only reason BMW's night vision is on iDrive because it was a cheap easy way to get it into the cars. But little R&D was done as the system is all off the shelf parts.
Can you imagine if the HUD display was on iDrive instead of the windshield?
