Also, how does that really work out in practice - can I buy a house in a residential neighborhood and open a noisy biker bar in it?
http://urbankchoze.blogspot.com/2014/04/japanese-zoning.html
versus US style "euclidian" zoining:
http://urbankchoze.blogspot.ca/2014/04/euclidian-zoning.html
The rule that Marin can't be upzoned is hilarious.
This is why there's the double decker tunnels downtown - one was intended to branch off towards Marin.
After the loans on the construction of the Golden Gate Bridge were paid off (some time in the 1960s or 1970s) instead of eliminating the tolls, it was decided to use the revenue from the tolls to subsidize public transportation between SF and the counties to the north of it. The buses and ferries between Marin and SF remain very good IMHO.