Super Moist Chocolate Cake

1 package chocolate cake mix
1 c. mayonnaise
1 c. water
1 tsp. cinnamon (or cardamon would be good too)
3 eggs

Stir cinnamon or cardamon  into cake mix.  Add mayonnaise, water & eggs.  With low speed, beat for 30 seconds.  Beat at medium-low speed 2 more minutes.  Pour into 9" cake pans.  Bake 30-35 minutes at 350 degrees.  Cool for 10 minutes in pans on wire racks.  Loosen from pans place on wire racks until barely warm.  Frost with chocolate-cream cheese  frosting while barely warm.