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 Modification of where they are made 
 Adding clarification as to who really makes the Hummer line of vehicles and where. 

 H1 - made by AM General.  Dedicated factory and plant for H1's in Indiana 

 H2 - made by AM General under contract with GM.  Dedicated factory and plant in Indiana 

 H3 - made by General Motors in their Shreveport, LA plant.  The same plant puts out the Chevy Colorado and GMC Canyon lines.