I'm Ready For Summer Root Beer Float Cake

In a large bowl, combine cake mix, oil, eggs, and 1 1/4 cups rootbeer.

Beat on low speed for 2 minutes or stir by hand for 3 minutes.

Pour into a greased 13 X 9 inch baking pan.

Bake at 350°F for 30 to 35 minutes or until a toothpick inserted near the center comes out clean.

Cool completely on a wire rack.

In a small bowl, combine the whipped topping mix and remaining root beer.

Beat until soft peaks form.

Frost cake.

Store in the refrigerator.