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Hummer HX Concept Spotted At Milford Proving Grounds
Talk about a blast from the past, new spy images have come out of two 2008 Hummer HX concept SUVs hanging around the GM Milford Proving Grounds.
It's not certain what their doing at Milford, they could have something to do with the electric Hummer, but most likely they're only going to be used to promote it.
![Hummer HX Concept]()
![Hummer HX Concept]()
![Hummer HX Concept]()
![Hummer HX Concept]()
![Hummer HX Concept]()
It's not certain what their doing at Milford, they could have something to do with the electric Hummer, but most likely they're only going to be used to promote it.
