Hey...not that it has to be the same outcome, but this happened to me last year in the middle of summer. I own a 2004 pac. I was driving an the red light came on and the car shut down @ 65mph. I was able to pull over and start the car again. It did it 2 more times and then I had to get the car towed. The computer behind the front bumper went bad. $800 part. Fortunately it was covered under waranty. Not sure what the name of the computer is, but it's located behind the front bumper on the driver side.
Hope this helps. Good luck.