A man watched as his wife and son were killed after a dangerous driver ploughed into them head-on - and then hid from the police.<br /><br />Angela Boyack, 59, and her son, Stephen, 22, were driving back along the A632 Chesterfield Road in near Kelstedge, Derbyshire, when Joshua Hill, 27, crashed into them.<br /><br />He had been attempting to overtake a car in his BMW X3 in the rain and collided head-on with Angela's Hyundai i20 travelling in the opposite direction - killing her instantly.<br /><br />Stephen, who had been driving the car, suffered serious injuries and was taken to hospital where he died a short time later.<br /><br />Angela's husband, William, was driving with his elder son behind his wife and witnessed the collision.
