MichaelBay.com has posted another image of a new Transformers 4 vehicle join the already large vehicle cast.

"The adventure continues to transform with a very different offering from Daimler Trucks North America . . . the imposing 2014 Argosy cab-over truck by Freightliner. High Resolution photo: http://bayhem.com/1akzqZb."

Considering the various vehicles we have seen up to this point I can't help but think of the Stunticon leader Motormaster.