Sorry, just really wanted to throw that title there.  
Candidates; Hot Rod, Rollbar, Cliffjumper, Bludgeon or the red NAZCAR/Wrecker.

That head on the sticks been the most curious and frustrateing to think of who belongs too.
And personaly I think its either of them.

So specualte.

 

Roddy! It's Roddy!

 

Hot Rod.

 

I'd hope for Hot Rod or Cliffjumper

 

Red NASCAR

 

This ^
His head color matches more with Red Nascar.

 

i think its either Rollbar, the red nascar, or a decepticon

 

I think it's Rollbar. The shade of red matches, and it has some resemblance to Ironhide's face. I honestly don't see how one could get Hot Rod/Rodimus from it.

 

I'm thinking it's the NASCAR bot.

 

Ruulbahr.

 

Either Hot Rod or the red Wrecker.

Mostly the shape of the helmet and the crest. The face doesn't match Hot Rod, but who knows what he could be like under Bay.

 

Ironhide

 

I'm thinking it's the Ferrari bot.

 

i say the red nascar, we still need a better pciture of that face.