Cd... absolutely brilliant! Very nice approach to having a bit of fun with ecomodding... it fits nicely into the aero theme! Great images!
I like the idea of listing the 'kills' on the sides... for me, I'd prefer the 55gal oil drum... every time I save another 55gal of fuel (based on EPA), I'd put another 'drum kill' on the side... so I'd show a running total of fuel saved over the life of the car. I'd have 4 drums on there right now...
(yes, yes, I know that 55gal of oil does not yield 55gal of fuel, but I think people would 'get it' nevertheless)