Well, I have just started commuting by bike, which is 10 miles each way, and I am also starting to do most of my 'around town' on my bike as well. My wife needs to drive to work since her job includes some errand type stuff that needs a car (our minivan) and it is 30 miles each way. I do own a car as well, as I have always, but I am looking for ways to use it less. I love driving my car, as it is a fun car to drive, and I love cars in general, but then again, I love eggs too, and I can't have them every day either!
We do not have public transport where we live, and things are spaced out a bit. Any ride that involves a destination to shop, do mail, doctor, etc etc etc, starts at 4 miles, and goes up quick. I am taking that as the challenge!!
In any event, I am looking to make a big dent in the 11k/year that I put on my car for what is left of this year, and a bigger dent next year.