[dbaupp]

I also lived in the South Bay and found ZipCar and/or renting a car for day, weekend and even week long trips worked fine (which one is cheaper depends on your age and whether you can get a discount through your employer or whatever). There was enough "Neighborhood" rental places around to be easily accessible by bike. A weekend was on the order of $60-180, and so even doing this every weekend only adds up to $3k-9k per year.