I did a quick search and saw nothing of this.
Tonight, I shifted the car into reverse to back out of the garage, and for a moment, the instrument cluster left video display showed "Normal Mode".
What is Normal Mode? And what mode would the car be in if not Normal Mode? The Engineering Test Mode that I wrote about before? Well, I have driven the car several times since playing around with and terminating Engineering Test Mode, so I don' t know why I got the message tonight.