On a bright sunny day, the Hyundai Forward Attention Warning (FAW) SHUT OFF my adaptive cruise control while doing 70 mph, indicating that I was not focused on the road. I was looking straight ahead at the road the whole time. I later determined that the system was reacting to glare on my glasses (not sunglasses, no tint whatsoever, just glass). This led to a very dangerous condition because I was fighting with the car to determine what had happened (at 70 miles per hour), not focused on the road as I just had been prior. The system is checked as OFF in setup (as described in the manual) but clearly that was not the case. The driver CAN NOT shut the system like the manual says. I actually love the car, EXCEPT for that