Fondant covered cake. I found a" tutorial online":http://saraelizabethcakesandsweets.blogspot.com/2013/11/3d-firetruck-cake.html?spref=pi showing how to make a base so it was lifted up. It was amazingly helpful.

This was made for a groom. The decals were made with edible images and made to reflect the truck that would be at the reception to transport the new bride and groom. The cake itself is fashioned similarly to a truck in their department with a few cosmetic changes that I had to make.