Directions for Cake: Preheat oven to 350 degrees Fahrenheit. In a blender, process orange and carrot pulp with eggs, oil and water. Add cocoa powder to dry cake mix and stir, then fold in pulp mixture. Grease two 8 inch round cake pans. Divide batter between pans. Bake 35-40 minutes.
Directions for Frosting: Mix together softened cream cheese and butter. Stir in orange oil, orange zest, cocoa powder and milk. Add powdered sugar 1 cup at a time until desired constancy.