same as kcarlie. Sometimes even more on the SF Peninsula.

The better question is what are you doing to offset the cost? \:\)

I try to bike commute once a week. I wish I could do more but it's an 18 mile ride each way and I need to drive my car during work hours, for work purposes. The wife and I try to have at least one day on the weekend when we don't use a car. We put the kids on a bike trailer/jog stroller and helps to add a workout to our weekend routine. Luckily our area is very bike friendly and resources are all close by.