Pour cake mix into mixing bowl.  Add egg, and cola. Mix gently till most of the lumps are gone. Pour into Pam sprayed 9"x13" baking pan and bake as directions say for cake mix. Cake is done when toothpick inserted into middle comes out clean. Allow to cool for 10 minutes before removing from pan.

Note:  this can also be made without the pudding mix just use lite cool whip to frost.

Icing:

Mix the pudding mix with the milk as per package directions, (using this amount though) and frost the cooled cake. Store covered in the fridge. Yummy good and lots less fat and sugar! This cake will be good and moist. Enjoy!