Gina, was standing on a street corner waiting for a ride to work. Gomez, who had just purchased a new car manufactured by Optimal Motors, was driving down the street. Suddenly, the steering mechanism broke, causing him to run over Gina. Gina suffered permanent injuries. Gina sued Optima for product liability. Optima asserted two defenses: (1) reasonable care had been used in manufacturing the car and (2) Optima was not the manufacturer of the steering mechanism. Will either or both of these defenses be valid against Gina's suit? Explain.