General Motors form "power partnership" with Paramount Pictures for joint promotion of the new upcoming live-action Transformers movie. The four main GM vehicles that will be in the film, including "Bumblebee" (Chevy Camaro), "Autobot Jazz" (Pontiac Solstice), "Autobot Ratchet" (HUMMER H2), and "Ironhide" (GMC Topkick). "Bumblebee" changes from the classic Chevrolet Camaro, and is a central character in the saga of aliens who take mechanical forms when on Earth. "Autobot Jazz" converts from a Pontiac Solstice in a hardtop format. A Hummer H2, modified as a rescue vehicle, changes into "Autobot Ratchet," and "Ironhide" changes from a GMC TopKick medium-duty truck. They all star in this summer's live-action blockbuster, "Transformers," from DreamWorks Pictures and Paramount Pictures, in association with Hasbro, which will premiere July 4.