This intro is all just to say that it's a little odd for Tom at TerraPass' blog to be so critical of the way that the Chevy Suburban magically qualifies for a 28 mpg rating under the CAFE standards (it actually gets about 15 mpg). Turns out – and I'm glad TerraBlog dug this up – the Suburban is able to say it gets that many miles per gallon because it is a fuel-flex vehicle, and the possibility of ethanol in the tank ups the mpg on paper.
I think this post may be coming across as too critical of TerraPass and CAFE. Sorry about that. I know that TerraPass is doing a lot more for the environment than having a spiffy website, and I know CAFE standards have increased fuel economy and could potentially save a lot more fuel. Still, these type of paper programs will never replace actual sacrifice and change.
UPDATE: typo fixed in title