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Without any actual product to reveal today at the 2009 Chicago Auto Show, General Motors spent its time on the soap box making sure its heavy investment in Transformers 2: Revenge of the Fallen pays off. As we've shown you, GM revealed the Corvette Centennial Concept that will play Sideswipe, as well as Jolt the Volt, Skids the Beat and Mudflap the Trax. During the press conference, GM also displayed new footage of the entire AUTOBOTS crew, old and new, out rolling in vehicle form. Follow the jump to view this never-before-seen footage and marvel at the power of a two-hour informercial directed by Michael Bay.

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