I like the first option as well, with the clouds. I don't mean to nit-pick, but is the lime-green "Hypermiler" designation negotiable regarding color? Otherwise, no biggie...
RH77
It's definately negotiable. What color do you have in mind?
Off topic a bit....what percentage above EPA do you have to be to get the status of "Hypermiler"? 25%?
Anything over 20% and you're a hypermiler. Remember, that's 20% over the "combined" number, so if you do a majority of highway miles, being a hypermiler is very achievable.