The car is designed to prevent collisions that can be detected by the sensors. This particular collision could not be detected by the sensors, therefore it isn&#x27;t possible for the car to prevent it.<p>Are you basically saying a bulletproof vest has failed to achieve its design goal if it can&#x27;t stop armour-piercing rounds? Or a fire extinguisher has failed to achieve its design goal if it can&#x27;t put out a wild forest fire? There are always limitations to everything.