Tri-Met costs me $1.75 one way if I need to go 2 zones, but I only spend about $35/month on Tri-Met.

My car payment was $550/mo.
Insurance ~ $100
Gas ~ $200
Parking ~ $150/mo.
+ maintenance costs.
You do the math there. I did a lot of driving just to get to work.

Cycling costs me barely anything.

Things are much different now. I live in the city, share a car with my wife and don't have to mess with a 3000 lb. ball and chain that does nothing more than move my 180lb. body from point A to B. Most of the time it sat in the street taking up space while at home or work. I'm 34 and have owned around 12 cars. I used to put up with them. No I don't have to.