I had auto pilot engaged on my AP2.5 car this morning in stop and go traffic. At about 20mph in second lane from left, all of a sudden, the car started beeping and showed red hands on the wheels in the instruments cluster and disengaged auto pilot with a message "Cruise not available". The TACC and the AP were not available at that point. However, after about 5 minutes of driving, they became available again with the map showing 25mph max speed on a freeway with 65mph limit. After few more minutes, the speed limit got back to normal. I have no idea why the car did what it did. Some facts: - I did not ignore any Hold steering wheels message before this happened. - The GPS was not stuck from what I could tell Do you guys have any ideas on what might have happened?