Thursday night, when I arrived home from work, I turned my 500 off as usual, but then realized I wanted to finish hearing the story then ongoing on the radio. Forgetting momentarily that I could just hit the radio power button, I turned the key back to the on position and heard the rest of the story. When it was over, and I was about to leave the car, I saw a message in the speedometer display. This is where I usually see the day and date, and if the temperature is cold enough a warning about icy roads. It said, "follow me". I had a camera in the seat beside me, and thought I'd take a picture of the message since it was the first time I'd ever seen it (and the message made no sense), but by the time I got it ready the car had completely shut down and the message was gone. I don't know if anything preceded the words "follow me" because I wasn't looking at the speedo while sitting still in my driveway. Has anybody else seen this? What is it?