I think this is a total waste of time.
In these economic times, leisure is not a high priority when issues like defending the country are at stake.
If you can't afford your fuel bills then get a vehicle that's cheaper to run (bicycle?), ride more economically or don't travel as much i.e. cut your cloth to suit or get a 2nd job at Argos in the run up to Xmas.

If a fat middle-aged bird like me can cycle from Chippenham to Bath then most of you can get on yer bike (and yes I have been told that I have all the charm of Norman Tebbitt before).