O&K/Terex RH400 - Hydraulic Mining Excavator - (In red)

Tipping the scales at a sveltd 1,553,220 lbs, the RH400 is easily the heavyweight of the group, and in fact it's the largest hydraulic shovel in the world. This mining excavator is so big it actually has a rest area next to the operator's cab complete with microwave, coffee machine, a refrigerator and sleeping bunk. Given the size, this baby is probably a torso and an arm, a big monster arm at that, with that chomping shovel end too.

Caterpillar 992G - Wheel Loader - (In yellow)

Introduced in 1990, the 992G was for a time the largest articulated earth mover in the world. Completely outfitted, the 992G weighs in at over 204,000 lbs and can take 16-cubic-yard bites out of the earth. Perhaps useful as a leg, but really, a giant loader is useful anywhere.

Caterpillar 773B - Dump Truck - (In green)

The Cat 773B is a fairly standard heavy-duty off-road dump truck and can tote loads of about 50 tons all while tipping the scales at a scant 85,687 lbs. Positively gaunt compared to that hydraulic shovel. We're betting on a leg, perhaps some kind of transforming weapon, but with Bay, you can never really tell.

Mack Cement Mixer - (In silver and white)

Nothing to see here. It's a Mack cement truck, and considering the size of this thing relative to some of the other equipment, we're assuming Bay is using the Mack as a robot foot.

Komatsu HD465-7 - Articulated Dump Truck - (red)

The Komatsu HD465-7 is a step up in the dump truck department. With a 715 HP diesel engine and a 61-ton capacity, this 94,360 lb hauler is nothing to sneeze at; probably a leg or an arm, judging from the scale of the other vehicles.

Kobelco CK2500 - Truss Crane - (In yellow)

Able to dead-lift 250 tons, the CK2500 is certainly capable of some wanton destruction. We've got one thing in mind for this 458,600 lb crane: giant robotic mace arm. Oh, yeah, talk about Bay-style explosions and destruction; this thing is practically made for it.

Caterpillar D9L - Bulldozer - (In beige)

We can think of nothing better to act as a head for this brute than a Caterpillar D9L. This 107,000 lb earth mover is the choice of the world's militaries for mine clearing and heavy road-building operations. The D9L also possesses that which all truly bad-ass characters require — a strong jaw-line, or in this case, blade-line.

[via TFW2005]

Now that the cat is out of the bag, it looks like the producers of Transformers: Revenge Of The Fallen are getting a bit more lax about photos of their star cars. Here we've got the Corvette Centennial concept lazily parked in front of the 2010 Chevy Volt. This shot joins the video of the same pairing. It is rather nice to get a sense of scale by placing these to vehicles next to GM's large trucks.

Insiders report further confirmation that Devastator will be in the new movie, the Optimus Prime figure will be a new mold with a new transformation, and that Megatron will indeed be a tank. Now if we could just get the trailer unhitched from the next Star Trek, we'd have something. [via TFW2005]

In other news, one of Transformers 2’s special effects technicians was injured after pouring gasoline rather than diesel on a fire. Unconfirmed reports state that he was attempting to make said fire, “more awesome,” under the direct and specific order of director Michael Bay. [via Siebertron]

Of course, it’s also possible this is a hoax, or some unlicensed Chinese knock-off instead of an officially licensed product. But we do know that the Corvette Centenial concept has been repeatedly spied running with Autobots on the Transformers 2 set and that the inclusing of a not-yet-released GM concept indicated that this should be a reasonably major character. We’re going to wait for a toy that actually transforms before plunking down our hard earned cash on a new toy for our, ummm, nephews. [Transformers Live Action Movie Blog]

You want to know what amazes us the most? For some reason Transformers 2 fan-boys go to the set to ogle the goings-on and yet they only bring the crappiest cell-phone cameras. Seriously, do none of you guys even have a point-and-shoot? [TFW2005]

The robots-in-disguise fan-boys at the Transformer Live Action Movie Blog have snapped some close-up pictures of the Hummer HX concept taken at the San Pedro, California set for the new Transformers: Revenge of the Fallen movie due out next summer. Also spotted was a Hummer H3T decked out with the same kind of "NEST" decals as the HX. Want to see the shot in higher resolution? Click here. [Transformers Live Action Movie Blog]

As you can see from the photos below taken by the Transformers fan-boys of TFW2005, Bumblebee was busy this weekend in San Diego at the Comic-Con. Oh, Prime's gonna be SO pissed!

[TMZ, TFW2005]

Although there's no official word if the Volt will actually be a Transformer, but given its guts and looks, it's just begging to become some kind of electric-themed Autobot. The Volt would join the Trax and the Beat as not-yet-available Chevy vehicles featured in the movie.

Jalopnik Snap Judgement: This may be the reason why they're hurrying up the production look of the car. They've got to beat set filming times, right? [Reuters via TFW2005]

Our next photo includes a shot of Isabel Lucas, Ramon Rodriguez and Megan Fox. The item we immediately notice is that Megan Fox isn't as tanned as she was in the first installment of Transformers, which is a damned shame. Check out the picture and video below for reference, and you be the judge. [The Prox]

If you recall, Ratchet from the first Transformers was a tweaked Hummer H2. Could Ratchet be getting a upgrade? Or will the Hummer H3 serve as a completely new Transformer? GM might just using the black H3s because it doesn't have enough spare Hummer HX concepts for a measly movie expo. Only time will tell.

Maybe that "strategic review" of the Hummer brand meant just dumping all of the Hummer eggs into the Transformers basket. [TFW2005]

We first saw the Chevy Trax last week on the set of Transformers 2 in the City of Brotherly Love, but the shot raised more questions than answers. Who was this new Transformer? Friend or foe? Well, today reveals the truth: The Trax will be playing for the good guys in the role of an as-yet unnamed Autobot. We find a certain humor in the fact that we can't tell who just yet because the robot is in disguise; of course, that's the point. We're wondering if Ironhide gets chopped in twain and melted down to make two more fuel-efficient 'bots. After all, we haven't seen the Chevy Beat, the Trax and Ironhide all in the same place yet. [TransformersLive via TFW2005]

So we're starting to think GM's decided the auto show scene isn't where they're going to capture the next generation of car lovers. Instead, they're decided — why not take the show to the people by way of the silver screen?

Other than the Detroit show, how many other shows really draw the attention of the mainstream international media? So it kind of makes sense with the shows becoming places over-crowded with product and variant reveals and under-crowded with mass media. Why not reveal a concept for the first time at a place like the Detroit Auto Show — then reveal it a few months later for the "rest of the world" on the big screen. Sure, we're speculating here — but the idea itself may actually make some sense. Of course, this could just be some really evil Decepticon — but why sully the American Revolution by making a bad guy a Chevy concept? Just sayin'...

UPDATE 2: That front end really has a very distinctly distended fourth-gen Camaro vibe to it...old Camaro concept perhaps? Does Bumblebee go bad for a short time in the movie? Just some more speculation on my part.

Chances are, Arcee will resemble this bike in Transformers: Revenge of the Fallen.
[via Hell For Leather]

We found one more full frontal shot of Bumblebee dressed up in his new alt-mode form of the 2010 Chevy Camaro SS — so why not leave you with one more opportunity to stare at his newish-looking nose. [via Transformers Live]

There's no word whether this vehicle will serve as a Transformer or just an "extra," but right now our best guess tells us it's more likely an "extra." The clue are the bullet holes which tend to indicate human interaction with the vehicle rather than robotic — that would show up, we'd assume, as laser or "plasma" burns. We're thinking the special GM paint can deflect mere bullets.

[Transformers Live]

[via TransformersLive]

What's particularly interesting about the Beat and the Aero-X is that both will be the second and third high-profile concept vehicles to be used in the filming, the first being the Hummer HX. Rumor suggests the Aero-X will play the role of Wheeljack, and while there's no word on what role the Chevy Beat will be playing, we can safely assume it'll be a small one... *rimshot* [TFW2005; TFW2005]

Now we don't expect this to actually "be" Arcee. But it'd be pretty cool if it were. [Latino Review]

These questions and more will probably not be answered for some time, but in the meantime someone over at Releaselog managed to capture some photos of vehicles, including this one of the Hummer HX as some sort of military vehicle.

[ReleaseLog via TFW2005]

[TFW2005]

Rumors suggest that the first shoot next week will take place in Bethlehem, Penn., and the set is outfitted to look like a Chinese city. It will feature a new concept car not seen in the first movie as well as two Blackhawk helicopters. A car hauler was also seen around the set with two Saturns and five unidentified Chinese cop cars.

[TFW2005; Transformers Live]

The company behind this model, Robot-Models.com, also has a smaller version of Optimus Prime currently available as well as Bumbelee. A descriptive paragraph also suggests that Jazz, Ironhide, Megatron, Barricade, Starscream, Blackout and Frenzy will also be available for purchase soon. [Robot-Models via Giz]