http://www.break.com/index/unlock_your_car_with_a_tennis_ball.html
Not sure this would work on a Benz. She has dented her little red rice burner doing it.
-- Clay Seattle Bioburner 1972 220D - Gump 1995 E300D - Cleo 1987 300SDL - POS - DOA The FSM would drive a Diesel Benz