Power steering failure!!
 

Was driving today when suddenly the steering wheel became stiff and wasn't turning Iwas lucky I was at a residential area and no one was around me. When the tow truck came he opened the hood and the belt had come off. It didn't break but it looked like one of the wheels that holds the belt was off a little. Why do you think this happened. I have an R350 2008 and thank God my kids weren't in the car and we were not on the freeway. Should I feel comfortable and safe after they fix the problem
P