Final answer:
A product liability case occurred when an automaker sold cars with defective brakes known before sale, leading to accidents. The manufacturer was held liable, thus protecting customers through legal means and compensation.
Step-by-step explanation:
An example of a product liability case is one involving a manufacturer of automobiles with two different models. After testing revealed that one model had defective brakes, the manufacturer still proceeded with production and sale. The faulty brakes led to accidents, resulting in injuries and deaths, and the manufacturer was held liable due to prior knowledge of the defect and the consequences. Customers were protected in this scenario through legal action, which held the manufacturer responsible for the damages caused by the defects, ensuring compensation for the affected parties.