I was actually wondering what kind of cake this classifies as…it contains baking powder and whipped egg whites.  No butter, but oil.  Butter/oil cake?  Sponge?

: ( pic is too big and won’t upload

Here it is…

http://dinnerintervention.com/boston-cream-pie/

Both the forumla and technique look to me to be a chiffon, which is a sponge-type cake.