I might try it but I've already got a "Green commuting" New Years resolution going right now: 1 point for human-powered commuting (bike or walk for me), 1/2 point for transit or car pool and 0 points for taking the car (or having my son drive me in because he takes the car away to go to school). If I'm out of town or need to take the car or fleet vehicle for business purposes, it doesn't count. My family is on board so if I say that I can't be home for 45 min because I'm biking or walking, they can't come and get me with the car, they'll just have to wait or plan around me. Right now, I'm sitting at 81% because I have occasionally taken a ride to work, then walked home. However, with the better weather and the bike commuting from now on, that figure will climb.

When my winter bike is ready for next winter, I'll be able to bike commute 100% of the year.