Google had a method of converting your Froogle feed to an AdWords campaign by using something named "Ads Automator." We first wrote about Ads Automator in September 2004 but ClickZ had one of the first write ups on it on May 10, 2004.
Via a WebmasterWorld thread, we learn that Google has removed the Ads Automator feature with the recent changes to the Froogle / Google Base format.
With the change to the Base upload, Ads Automator has been removed as an option for new campaigns. I am not sure that it will come back, at least in the near future.
Forum discussion at WebmasterWorld.