As the nation struggles through a recession, economy watchers are pinning their hopes for recovery on the soon-to-be-launched Diet Vanilla Coke. 'Diet Vanilla Coke, to be introduced this fall, is our last, best chance at turning this thing around,' Fed chief Alan Greenspan said. 'We had hoped that Pepsi Blue or Dr. Pepper Red Fusion would stem the tide, but consumers have not responded in sufficient numbers.' If Diet Vanilla Coke fails to jumpstart the economy, experts say the U.S. is doomed. 