I made this for my father-in-law's birthday. (My in-laws live on a farm) Inspired by Boween's great tractor cake. WASC cake, buttercream icing, fondant accent pieces. Next time I'll use a loaf pan instead of carving from a sheet! The back tires are 4" cakes, the front tires I cut from the sheet using a cup as a cutter, and the trailer tires are made of fondant. I'm not sure why the icing looks like it's cracked in the photo. This one was lots of fun to make!