There's going to be a road test. Aerodynamics is VERY important.
But... The VX hatch is pretty aerodynamic to begin with. What's its stock CD? 0.25? Something like that?
What would the modifications I'm considering get you? Under 0.2? There are probably diminishing returns to aeromods at some point.
Here's the homepage of the prize:
http://auto.xprize.org/
I've seen the guy on this site that has a heavily aeromodded Civic, with the nose-cone and tail-cone. I can't say that it looks right to me.
And he "only" gets 70 mpg. It's not a VX though.