While I agree the Fit is pretty awesome when it comes to MPG considering the flexibility and function it brings to the table (and lets not forget about the curtain air bags and other MPG taxing "extra weight" safety features) I highly doubt it will win on that forum.
The CleanMPG mentality is not people looking for ultimate flexibility... all they care about on that forum is getting the best MPG (regardless of how much you end up spending trying to save a few dollars on gas... or more importantly the numerous unsafe practices they encourage).
It kind of reminds me of Greenpeace/Sierra Club when they protested the logging of "Clayoquat Sound";12,000 idiots left over 4 tonnes of garbage littered over the squatter camp they setup. Everything from dirty diapers to syringes used for heroin. It was cleaned at the expense of the municipality and also local volunteers... sometimes you realize the people who are the "moderates" are actually the ones who make the real difference out there.
/Rant