I'm surprised nobody has mentioned e-bikes. As far as I can tell, that is the answer to the bay area traffic. Since I bought one roughly 5 months ago, I've commuted almost 3000 miles. My commute is the same every day, and it is a lot faster than a bad day of traffic. The bonus is that I don't have to change into bike clothes or shower.
That's definitely a viable option for biking around a city that doesn't have favorable spring or summer weather. Can you store your bike inside instead of locking it up on the street? I imagine an e-bike would be at greater risk of theft than a regular bike. That might be an issue for folks who commute by bike but have to lock it up outside.
Yea, I lock my bike inside the office (where I charge it as well). I also keep it in the garage. Additionally, I have a GPS on it, so if it does get stolen, it's a lot easier to locate
Details:
12 mile commute
40 minutes by ebike, every day
25 minutes by car, best day
50 minutes by car, average day
1 hour 40 minutes by car, average day