Sprite Cake

CAKE: Mix cake mix, 1 box instant pudding, 2 1/2 cups sprite and egg whites together. Bake at 350 for 35 to 40 minutes in 9x13 pan. TOPPING: Add pudding to sprite. Mix until thick. Fold in Cool Whip. Spread over cake after completely cool. Refrigerate for at least 2 hours before serving. You can poke holes into the top of the cake with the handle end of a wooden spoon while cake is hot and pour 1 box sugar free jello (any flavor) dissolved in 1-cup boiling water into the holes for another flavor of cake.