I was going to say that if I ever see a 911 broken down kerbside I will just drive past but come to think of it, I don't think I have ever seen one broken down!
If i was in my car i would have stopped always willing to help a sports car friend...but i was in the works lorry and i dont think the person would be too impressed to see a 44tonne lorry come skidding to a halt behind them on the hard shoulder..