Carbon footprint redux

Bak to my posting of the other day, here's more. Note the comment from Jade who says she found another carbon footprint calculator at BP.com and determined that her footprint was 6 tons a year (actually British tonnes).
I did mine there, a bit easier than the manual calculation in the Guardian article, and found it is 11 (two-person household). That's much less than the U.S. average but a bit higher than the British average. What puts mine high is the need to drive everywhere here, where the closest supermarket is 15 miles away and everything else we use requires 15-30 mile car trips. The heating fuel calculation is probably high since woodburning reduces our gas use. But at any rate, it puts us in Mark Lynas' 'overconsumer' range. Thanks, Jade.