Low US Treasury Yields

The article is here - http://biz.yahoo.com/ap/081120/wall_street.html

The interesting paragraph to me is this - "The yield on the benchmark 10-year Treasury note sank to 3.00 percent, the lowest point since 1958. The 30-year bond's yield fell to 3.46 percent -- the lowest since the government started issuing the bond in 1977. The yield on the 2-year note, meanwhile, fell to 0.97 percent -- the lowest since 1947, according to Global Financial Data in Los Angeles."

The question now is ... when (and not if) will it get lower?