he looked past her at the rest of the screaming , panicked riders crammed like a mass of worms into the rear of the car , the nearer ones wriggling , kicking , biting , clawing to get further to the rear and the ones at the very back battling with all they had to stay where they were , and suddenly sandy knew what the others had already discovered that once you got back there you had nowhere to go unless you could find a way to open the rear door and jump onto the tracks at who-knew-how-many-miles an hour and hope that if you were lucky enough not to break your neck when you hit , you wouldnt land on the third rail and get fried to a cinder .