That multi layer cake looks delicious.
It’s highly constructed. Probably takes quite a while to create and assemble all the layers. It is probably stored inside a fridge as soon as its put together. You don’t want those layers getting warm, soft and wobbly.
I’m guessing it ends up as a rather small cake, mainly because most people would not chose to make a sheet cake with so many thin, delicate layers. Who has 14 baking pans? Maybe a professional bakery.
Mary Ada Marshall on Smith Island has made the cakes (and Crabcakes!) for many years and sent them off on boats to people who order them. She gives demonstrations in her home for tourists to the island, and you can find them on YouTube. (Not sure she’s still doing all of this, but up to a couple years ago she was going strong.)
Here’s a nice little video about Mary Ada, her husband Dwight, and Smith Island:
http://www.youtube.com/watch?v=yAqM4Y5RIEk
http://libapps.salisbury.edu/nabb-online/exhibits/show/baking/smith-island-cake/mary-ada-marshall