Now add $300/month for a parking space in an apartment building, $10/day for parking in a garage downtown near your office, plus your car payment/depreciation o

Now add $300/month for a parking space in an apartment building, $10/day for parking in a garage downtown near your office, plus your car payment/depreciation of the car you're driving. Also not all public transit trips take twice as long as a car. In many urban places (which is where any of this scenario makes sense) at rush hour a trip on public transit is often about equivalent to driving if not shorter.