If you're in SF, what about putting out to sea? There are plenty of boats and such in the bay, and I have to think that once clear of the entrance, you could scurry up or down the coast and escape a major portion of the exodus. Yeah, I am sure there are pitfalls with that idea too. If you don't happen to own a boat, I am sure comandeering one from some unprepared party wouldn't be too hard, given that the gen pop there has been duly disarmed.

Then again, there's that darned Airscooter. Anyone got a spare $55K? What a handy way to get 250 miles away from the zone of desperation.