WWII Chocolate Mayonnaise Cake

My daughter Alexis always wants a homemade chocolate cake for her birthday nearly every year. 
In the last couple of years, she has bugged me to try a recipe she got from the mother of a friend she met while in college. 

The Chocolate-Mayonnaise Cake became really popular during War World II when some food staples such as eggs and butter were in supply and housewives had to make do with what they had on hand.