At 5:40 a.m. on Saturday, a driver on the eastbound Prospect Expressway lost control of the car. After the Mercedes struck a concrete median where the BQE and the Prospect Expressway intersect, it flipped over. Seventeen-year-old Shi Ying Wu of Flushing, Queens, a passenger in the back seat, suffered severe trauma to her body and was pronounced dead at the scene. The driver and three other passengers were treated for minor injuries at nearby hospitals.