Quinton owns a flower shop. One night he is driving his delivery van when he sees some friends walking down the street. Quinton honks his horn and waves in an attempt to get their attention. Unfortunately, he does not see Susan's car parked illegally on the side of the road with a flat tire. Quinton collides with the parked car. Is Quinton liable for negligence (please discuss all four elements needed to prove a case of negligence)? Discuss fully the concepts that may prove his negligence as well as any defenses he might raise against the Susan, the owner of the car.