Chocolate Turtle Cake

1 box Betty Crocker® SuperMoist® devil’s food cake mix 1 1/3 cups water 1/2 cup vegetable oil 3 eggs 1 bag (14 oz) caramels 1/2 cup evaporated milk 1 cup chopped pecans 1 bag (6 ounces) semisweet chocolate chips (1 cup) Ice cream or Whipped cream, if desired Caramel and chocolate topping, if desired Chopped [...]