This cake was made for my father-in-law's 60th birthday. He worked for Clayton Trucking, and he loved his truck there so much. We took millions of pictures. So, when this birthday rolled around (no pun intended), everyone wanted me to try to duplicate his truck. I did, to the best of my abilities. I didn't have enough time to make separate wheels. Other than that, I'm very pleased with its turnout. Fondant and buttercream. Devil's food with devil's food buttercream underneath.