Four GM vehicles star in "Transformers" flick

General Motors this week confirmed four of its vehicles will be the heroes of "Transformers," the action-adventure movie from DreamWorks Pictures and Paramount Pictures, in assciation with Hasbro, slated to debut July 4. The company also released pictures of each.

Bumblebee is based on the new Chevy Camaro concept car and the 1975 original. Ironhide will be a medium-duty GMC pickup. The Pontiac Solstice GXP stars as Autobot Jazz. And lastly the Hummer H2 stars as Autobot Ratchet.