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General Motors announced that it will be expanding its Global Powertrain Engineering Headquarters in Pontiac, MI at a cost of $200 million in order to consolidate operations and streamline the development of next-generation powertrains for electric, fuel cell and hybrid vehicles. At 450,000 square feet, this facility is already one of the biggest of its kind in the world, and GM is adding an extra 138,000 sq-ft to combine the resources at four engineering and R&D facilities currently spread

Click above for high-res gallery of GM's new powertrain facility

On Friday GM officially kicked off use of its new Powertrain Engineering Development Center in Pontiac MI. The new $463 million facility includes 120 dynamometer test cells for exercising all manner of new drivetrains. Among those cells 20 are specifically dedicated to testing motors for electric and hybrid drive systems. Others are split among fueled and non-fueled cells for testing gas, diesel, and flex-fuel engines and transmissions respectively. A new quick connect pallet system allows techn