A man who came to the aid of a couple whose car broke down on an Ocean Beach street the morning of April 9 was struck by a vehicle that fled the scene. Police said a couple pulled over on Sunset Cliffs Boulevard near Nimitz Boulevard just after midnight due to problems with their vehicle. As they waited on the side of the road, a vehicle stopped in front of them, with an occupant offering to help. Witnesses said he was checking the engine under the hood when another car sped by and struck him and the disabled car’s door. The man who offered aid was rushed to UCSD Medical Center with major injuries, including a broken foot and a bruised lung. Witnesses described the hit-and-run car as a gray or silver Subaru or similar vehicle. Police said the car should have damage to the right front. No other injuries were reported.