If you had read the SMH article you would have noticed the terms "reportedly" and "planning to" and "limited production run".

A limited production run would be kept in-house for evaluation and not for general sale - just in case they scrap the idea.

Now, have a look at this article Revealed: Volkswagen's 69.9-MPG Diesel Hybrid | Autopia from Wired.com

VW themselves are describing this vehicle as a "concept car" yet it has more potential for development and large scale production than the little 2 seater in the SMH article. My point is that if the more conventional and useful Golf diesel hybrid is still considered by VW as a "concept car", what does this make the "toy" car in the SMH article?