Leader Class GF/Cybertron Optimus Prime comes to mind too but I'm not sure how much of that is fake kibble.

http://www.seibertron.com/transforme...rime/579/1/70/

The windows at the back in robot mode? They really aren't the front of the truck but look "like" it in robot mode. It's supposed to be a nod to G1 Prime.

http://www.seibertron.com/transforme...ime/579/1/105/

Of course, the grill has to be fake kibble.