First, I think it will create more mechanical grip, even without any hybrid technology. The question is if that mechanical grip makes up for that very likely aerodynamic penalty. I know that Audi did the studies and obviously has more data on this than me, but I would not be surprised what made the wider tires the winner was planning on powering them at some point. There are all sorts of questions to this theory, like do you need to power the fronts or do the rears have more than enough grip to handle the power. Something to look at would be the front pushrods. They would have to be positioned so they do no go through the drive shafts, so probably not on the centerline of the front axle or very high. From the pictures they do not look very high, but the pictures do not make it clear where they line up. The fin is required by the rules to help prevent the cars from becoming airborne.