In a large bowl, combine cake mix, eggs, sour cream, oil, and vanilla pudding.
Spread half the mixture into a lightly greased tube pan. The batter will be quite thick.
In a small bowl, combine cream cheese, 1/4 c. sugar, and egg.
Spoon the cream cheese mixture evenly over the orange cake mix batter layer.
Spoon the remaining orange cake mix batter over the cream cheese layer.
Using a knife, lightly swirl, just a few times. Do not go crazy with swirling.
Sprinkle the top with turbinado sugar.
Bake at 350 degrees for 40-45 minutes, or until edges are golden brown and a toothpick inserted near the center comes out clean.
Cool in pan on a wire rack. Slice and EAT!!