Preheat oven to 350 degrees F. Grease and flour 2 8 inch cake pans.
Mix together the sugar and vegetable oil. Beat in eggs and vanilla. Slowly add the flour and baking soda and blend until creamy.
Split the batter up between the 2 cake pans and bake for 50 minutes, or until a toothpick comes out clean.
Cool cakes on a wire rack and let them come to room temperature.
In a large bowl cream together the butter and cream cheese. Slowly stir in the powdered sugar to reach the desired consistency.
Frost the bottom layer of the cake and spread the sliced strawberries over the frosting.
Add the 2nd layer to the top and finish frosting. Garnish with berries if desired.