Someone caught a picture of a modified truck embossed with an Autobot insignia on the rear and they are pretty sure it's Ironhide from the Transformers movie, good guess I'd say.

There's nothing much to see, but the person who took the pictures managed to tell them a little bit about it...

It appeared to be a heavily modified Sierra 3500 GMC. The front was more altered than the back. Vents on each side of a very angular hood and large, square headlamps made up the front of the vehicle. The rear has large fender and smoke stacks. After researching the transformers movie site, this could be ironhide. He use to be a red, nissan van back in the day. Still pretty cool. The autobot logo only appeared on the tailgate and was embossed into the metal.

It's funny, but I think letting the public have sneak peaks at vehicles dolled up as the Transformers is actually getting the film way more publicity than the marketing people could have ever hoped for.

You can see pictures of it over at Jalopnik along with Jalopnikanother story that might have some shots of either a crane doing work, or perhaps Devastator...Now there's wishful thinking. It would be very funny if it turned out to merely be a crane on set!