Two children and three adults, including a pregnant woman, were killed in a car accident with a tractor trailer early Saturday on a Maryland highway, state police said. The family of five were traveling in a 2006 Suzuki Forenza to visit family in Baltimore when the car collided with the big rig before 1:15 a.m. on Route 50 near Queenstown. State police identified the victims as Regina Ayres, 24, and her daughter, Jordan Ayres, 7; Ayres’ boyfriend, Travis Straton, 25, and their 2-month-old son, Jonathan Ayres; and Regina Ayres’ pregnant sister, Zerissa Ayres, 30.