A potential remedy could be a significant tax on parking. Perhaps very significant. Parking is ugly and a blight on the city, as well as a tremendous waste of space that could be more effectively used for housing.
Traffic is a big problem -- as is parking. Public transit investments do have to correspond with building housing, but too often the lack of one is used as an excuse not to expand the other. We have to start somewhere.
As I said in the post, public transit deserves it own analysis -- I was already in the thousands of words just on housing! -- maybe that will be next.
Muni will not be extending T to Fisherman's Wharf, nor BART building a 2nd trans-bay tube and line through the Richmond/19th Ave unless the bay area can manage this housing problem and bring in more residents to pay for it.
Taxing parking(which is already done) is something only 2 groups of people will/can support:
1) Those without a car ( can afford to live close to work,take uber, rent cars - high income people)
2) Those who can afford the tax (high income people)
So no, this is most definitely not the solution.