I stopped in my driveway and shifted to reverse to park car but it barely moved and there was a loud grinding sound. Then the car would not move forward or in reverse. Small pieces of rusty steel were found in the path the left front wheel had followed and it was immobile. Dealer said no brake pad was present, after it was towed there, and also said that rotor would need to be replaced due to pitted surface. There were never any warning lights, brake symptoms before it happened, including when I stopped at an intersection just before my driveway. Had it occurred in a different location and circumstance, especially if braking was needed while going at a high speed, the result might have been deadly.