Doodling different parts form Combiner's alt mode. I am not very experienced with drawing non-living things XD (And tires are just a big pain in the ass XP. even bigger than Combiner himself is DX)
Left to right, top to bottom: Snoot (Part on the corn head) Cab, tire, chaff spreader (Flings all the leftovers out the back of the combine), and the auger (Which folds into his sword)
I missed riding in the combine this year DX!