Quoting "DEBKAfile", at:
http://www.debka.com/article.php?aid=738
"US military chiefs in Washington and Baghdad believe the Stryker, built by General Motors Defense of Canada and General Dynamics Land Systems Division of the United States, will provide American troops with a better response to the ubiquitous rocket-propelled grenade (RPG), favorite weapon of Saddam Hussein’s loyalists. They are expected to show their rapid- response mettle against the guerrillas’ agile RPG pick-up trucks, which turned up for the first time in the Samarra battle of November 30 after an absence of several months."