Chocolate Cake (extremely moist and rich)

This is the recipe I used for Truman's lightning mcqueen birthday cake.



1 pkg chocolate cake mix
3/4 cup water
3/4 cup oil
4 eggs (beaten)
1 pkg (large, but small works too) chocolate pudding
1 cup chocolate chips
1 cup sour cream (vanilla or plain yogurt works too)

Mix well and follow baking directions on pkg of cake mix