Last night (after the screen blanking incident I reported in a different thread) I was cruising down the freeway around 1 or 2 a.m. when I glanced at the center 17" screen and noticed a count-down timer inside a rectangular box which had a message saying that the car was about to install a software update. The message also said that if I did not press any buttons that the software update would start when the timer got to zero and at that time the car would not be drivable. Of course I canceled the box out and kept driving. But what would have happened if I had not noticed the message? Surely the car would not have simply shut down and come to a halt in traffic on the freeway - would it????