This cake was made with 3 cakes, two 9 x 13 sheet cakes and one cake in a loaf pan. The sheet cakes I cut in half long ways and stacked for the trailer. The cab was made by cutting off one third of the loaf cake and placing it on top for the cab. Then just ice and decorate. My lesson was to not ice between the layers, the cab was done this way and did not shift. The trailer I iced between layers and the 4 layers was just too much and was slowly shifting. I had to use skewers to stabilize it until the party. Bake and learn! I used a chocolate bar for the cab windows, twizzlers for the stacks, doughnut tires, and skittles for the lights. The cake was a huge hit with the kids.