I made this 18 Wheeler Transformers Birthday Cake for my son’s 8th birthday, Nov 2008. I made two cakes, not sure that I could pull the first one off.
The cake is made using two loaf pan. Cut the first cake down the middle leaving a thin layer for the 5th wheel(behind the cab area). Take the slab you cut from there and stand it up for the sleeper. Cut less than half from the other loaf and make that the cab ( cut it at an angle to make it look more like the wind shield in the front).
The wheels are made from chocolate donuts. I used the colors from the movie Transformer as my son is a big fan. The whole cake is edible except for the smoke stacks They are sucker sticks from the craft store.
I have made many other cakes from the Coolest cake site and I MUST say I love this site.