It looks like Volkswagen may have hybrid versions of the both the Polo and Golf on the market by 2009. In an interview with German magazine AutoBild, VW CEO Martin Winterkorn seems to indicate that following the introduction of downsized engines like the TSI models and the BlueMotion diesels, they are working on hybrid drivetrains. The Google and BabelFish translations are pretty rough but it appears that both mild and full hybrid versions are under test. It looks like they are taking advantage of some regenerative braking and electrically driven accessories, much like the Efficient Dynamics
systems BMW is adding to the 1-Series this year. If your grasp of the German language is better than Google's please feel to enlighten us further in the comments.
[Source: AutoBild via GermanCarBlog