I'm sure the aerodynamic wheel fairings are really good for fuel efficiency, but I predict they'll be a lot smaller on any production car that comes from this idea. People do like being able to drive over speed bumps after all.
And they also look rather strange. Not a big deal, but it could keep people from buying it. I know I wouldn't want those things on my car, they look like something straight out of a bad sci-fi movie.
