2 c. plain flour
2 c. sugar
1 stick butter
1/2 c. oil
3 tbsp. cocoa
1 c. coca cola
1/2 c. buttermilk
1 tsp. baking soda
2 eggs
2 tsp. vanilla

In saucepan, bring to boil oil, butter, cocoa and coca cola. Sift together flour, sugar and soda. Combine with oil mixture. Add remaining ingredients. Mix well. Bake in 9x13 inch pan, greased and floured, on 350 degree (preheated oven) for 45 minutes or until done.

ICING:

1 stick butter
6 tbsp. coca cola (or 1/3 c.)
3 tbsp. cocoa
1 box confectioners' sugar
1 c. chopped pecans
2 tsp. vanilla

Bring butter, cocoa and coca cola to boil. Remove from heat. Add sugar, vanilla and nuts. Pour over warm cake.