Watergate Cake

1 (18.25 ounce) package white cake mix

3 eggs

1 cup vegetable oil

1 cup lemon-lime flavored carbonated beverage

2 (3 ounce) packages instant pistachio pudding mix

1 cup frozen whipped topping, thawed

1 cup cold milk

Directions

1. Combine cake mix, eggs, oil, soda drink and 1 box pistachio pudding. Pour batter into a greased and floured 13 x 9 inch pan.
2. Bake at 350 degrees F (175 degrees C) for 30 to 40 minutes, or until a toothpick inserted into cake comes out clean. Cool completely.
3. While cake is baking, mix 1 box pistachio pudding, whipped topping, and milk. Chill. Ice cooled cake with chilled frosting