In the bowl of a KitchenAid, mix the flour and sugar.
2 Cups Flour, 2 Cups Sugar
Place the margarine, shortening and water in a saucepan over medium heat and bring it to a light boil.
1/2 Cup Margarine or Butter, 1/2 Cup Shortening, 1 Cup Water
In a separate bowl, combine the buttermilk, eggs, soda, vanilla and salt, whisk until smooth.
1/2 Cup Buttermilk, 2 Eggs, 1 teaspoon Soda, 1 teaspoon Vanilla, 1 Pinch Salt
Take the shortening mixture and pour it over the flour mixture and mix until smooth. Add the buttermilk mixture and mix again until smooth.
Lightly spray a cookie sheet with cooking oil (Pam).
Pour the mixture in the pan and bake for 20 minutes.
Allow to completely cool.
Frost the cake with the whipped cream frosting.
Decorate the cake with blueberries in one corner and two rows of raspberries all the way across the cake, skipping a stripe for the white stripe and repeating.