[JackMcCornack]

I've been running a blog on the Mother Earth News website re my 100mpg sports car, and am attempting to draw a line in the sand. I'm calling cars above the line extremely fuel efficient, and defined it thus in a footnote:

>>*What does “extremely fuel efficient” mean? Let’s define it as double the Corporate Average Fuel Economy standard for passenger cars. MAX gets about triple the CAFÉ standard, so I don’t think I’m setting the bar too high.<<

Using that definition, there are a whole bunch of ecomodders here who have made their cars extremely fuel efficient. The CAFE standard for cars stagnated at 27.5 mpg for 20 years (from 1990 to 2010) and this year bumped up to 30.2; anyway, I'm wondering if CAFE x 2 (slightly over 60 mpg) is a practical goal (a goal we should be asking conventional auto manufacturers to aspire to) but I'm also wondering if it's too easy a goal to deserve the adjective "extremely."

I'm prepared to change both the terminology and the definition if anybody has a better way to phrase it...it seems a bit clumsy to me but it's the best I've come up with. Your advice will be appreciated.