the honda does have indents in the wheel arcs at the rear... same as the opel eco speedster.... should be possible to modify an existing car like that if you're not affraight of a little steel surgery...(and possibly dirt all over the sides) i wonder what the FE impact would be...
I'm sure the impact of radiusing the aft part of the arches is marginal.
But the game of the aerodynamicist, after choosing a good basic form to start with, is doing a whole bunch of marginal tweaks that collectively add up to a significant impact.
Hey, the car in the background is Honda's fuel cell car, nifty.
The British magazine "CAR" had a write up on it a couple of months ago, truly amazing work. I have my copy at home if you want to see it.
Oh and it actually works too. At least long enough for the Brits to have a drive. It convinced the typically skeptical writers of CAR. Plus it looks GREAT! I hope the new Accord looks something like it.