she could use to break a window as the ice cold water reached her waist. >> i have nothing to break the window with. >> you have nothing to break the window with. >> i'm panicking. i can't get out. >> i understand. >> reporter: her life would depend on luck. luck that the car lights state on and a police officer and a sheriff's deputy happened to be just a few moments away and could find the car and reach the rear window. >> next thing i hear is shatter and the cops are like climb out, climb out. the cops grabbed my hands and they were pulling. i was still struggling to get footing and there went the car. >> they watched it float away in the dark and sink in 12 feet of water. >> i guess i'm lucky. somebody up there is looking out