Well, it would seem they think the car makes sense as it is out testing yet again. Did Audi find a cheaper battery supplier or figure out how to make the car more cost effective? Did they decide to put it back on track? Well, who knows, as the car will be featured in the Iron Man 3 movie so it may just be making rounds simply for that purpose. Audi loves to market in movies.
With no official word from Audi this is all just speculation. But the pictures and video below of the car testing are real and it clearly still exists. The big question is if it will ever see production.