I've been cycle-commuting for the last 20 years and have owned a car/pu for 18 of them. Over the last few years, however I've become much more aware of the tyranny of the automobile and cut my mileage from 12,000 to a little under 7,000. Also, I upped my cycling mileage to over 6,000 this year. My wife has a Toyota Echo she uses to get back and forth to work and it'd very good on gas and cheap to maintain. I only use my truck when absolutely necessary. Sometimes it sits for weeks at a time.
My goal this next year is to drive less than 5000 and cycle over 7500.