I agree, infrastrucure demand will be huge.

Here is another spin to copper demand. When I was younger I was told to watch what the cab drivers drive. They seem to gravitate to the vehicles that have the best value( combination of durability, functionality, and gas mileage). Here in Winnipeg, Manitoba, in spite that or winters can hit -40 degrees celcius, a large number of cabbies are driving hybrids. If hybrids take off as a global phenomenon, that would also be huge for copper. What better type of vehicle for China.