A 26-year-old man was killed and a 7-year-old critically injured late Sunday night in a two-car accident on East 46th Street near Emerson Avenue. Witnesses said the man was driving a black Mitsubishi east at a high rate of speed when he crossed the center line, striking a blue Pontiac head-on. The man was ejected from the vehicle and died on the scene. The occupants of the other vehicle—a 28-year-old female, 33-year-old male, and three children, ages 1, 7 and 12—were all taken to the hospital. Four of the occupants had non-life-threatening injuries, but the 7-year-old suffered critical head injuries.