Also, I have data and you don't. Mode share to work, by income:
< $30k: 10% by car > $100k: 26% by car
Mode share, other than work, by income:
< $30k: 15% > $100k: 33%
Parking and towing fines are practically irrelevant for the lower income people because they are highly reliant on transit and walking. Lets see an article that complains about injustice in transit fares.
http://archives.sfmta.com/cms/rbikes/documents/SFMTA-ModeSha...